Stepped cylinder head cover, engine and vehicle

Abstract

The utility model relates to the technical field of engines, in particular to a stepped cylinder head cover, an engine and a vehicle. The stepped cylinder head cover comprises a cylinder head cover shell installed on the top face of a cylinder head. A cavity used for sealing an engine cylinder cover is defined by the top wall and the side wall of the cylinder head cover shell. A coil installation boss extending in the width direction is arranged on the side wall of the cylinder head cover shell, the top wall of the coil installation boss is used for installing an ignition coil, and the ignition coil is electrically connected with a spark plug in the cylinder head cover shell. An original fixedly-connected ignition system is split, the ignition coil is installed in the coil installation boss area on the cylinder head cover shell, the spark plug is installed on the top wall of the cylinder head cover shell, and the ignition coil is transferred to the side face of the cylinder head cover shell from the top face of the cylinder head cover shell. And the space occupied by the ignition system on the top surface of the cylinder head cover is reduced, so that the accommodating space is increased for other parts.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engines, in particular to a stepped cylinder head cover, an engine and a vehicle. BACKGROUND

[0002] The cylinder head cover of the engine is installed on the top of the engine cylinder head, and serves as a sealed housing for components such as the gas distribution system and the ignition system above the cylinder head.

[0003] The ignition system of the engine includes an electrically connected spark plug and an ignition coil. The spark plug is fixed on the cylinder head, and its discharge end is connected to the cylinder, and its power connection end is connected to the ignition coil. The ignition coil connects high-voltage electricity to the power connection end of the spark plug, and the discharge end of the spark plug ignites through the high-voltage current released by the power connection end.

[0004] In the existing cylinder head cover, the cylinder head, the spark plug and the ignition coil are arranged in sequence along the height direction, occupying too much height space. In addition, there are components such as the gas distribution system in the cylinder head cover, and the ignition system interferes with the arrangement of other components at the center of the structural axis of the cylinder head cover, which leads to more complex circuit arrangement lines in the cylinder head cover.

[0005] Therefore, in order to reasonably arrange the space of each component in the cylinder head cover, the present application provides a stepped cylinder head cover, an engine and a vehicle. SUMMARY

[0006] In order to overcome the problems in the related art, the present application provides a stepped cylinder head cover, which comprises a cylinder head cover shell body installed on the top surface of the cylinder head;

[0007] The top wall and the side wall of the cylinder head cover shell body form a cavity for sealing the engine cylinder head; the side wall of the cylinder head cover shell body is provided with a coil mounting boss extending in the width direction, and the top surface of the coil mounting boss is used for mounting the ignition coil, and the ignition coil is electrically connected to the spark plug in the cylinder head cover shell body.

[0008] The height difference between the top surface of the coil mounting boss and the side wall of the cylinder head cover shell body is greater than or equal to the height of the ignition coil.

[0009] In an embodiment, the top surface of the coil mounting boss is arranged with M coil mounting holes in the length direction, and M is an integer greater than or equal to 1.

[0010] In an embodiment, the top wall of the cylinder head cover shell body is provided with N sleeve mounting holes, the high-voltage lead of the ignition coil passes through the sleeve mounting hole to electrically connect the spark plug, and N is an integer greater than or equal to 1.

[0011] In an embodiment, a wire sleeve is arranged in the sleeve mounting hole.

[0012] The high-voltage wire of the ignition coil is connected to the spark plug in the cylinder head cover through the wire sleeve.

[0013] In an embodiment, a heat insulation plate is arranged below the ignition coil accommodating platform.

[0014] In an embodiment, the plate surface of the heat insulation plate extends along the length direction of the cylinder head cover shell.

[0015] The second aspect of the present application provides an engine comprising the stepped cylinder head cover of the first aspect of the present application.

[0016] The third aspect of the present application provides a vehicle comprising the engine of the second aspect of the present application.

[0017] The technical solution provided by the present application has the following beneficial effects:

[0018] In the present application, the original fixedly connected ignition system is divided into two parts, wherein the ignition coil is mounted on the coil mounting boss area of the cylinder head cover shell, the spark plug is mounted on the top wall of the cylinder head cover shell, and the ignition coil and the spark plug are connected through a wire. The ignition coil is transferred from the top surface of the cylinder head cover shell to the side surface of the cylinder head cover shell, thereby reducing the space occupied by the ignition system on the top surface of the cylinder head cover, and increasing the accommodation space for other components.

[0019] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the several views, and wherein the exemplary embodiments of the present application are shown.

[0021] Figure 1 FIG. 1 is a three-dimensional structural diagram of an engine with the stepped cylinder head cover shown in the embodiments of the present application;

[0022] Figure 2 FIG. 1 is a three-dimensional structural diagram of an engine with the stepped cylinder head cover shown in the embodiments of the present application;

[0023] FIG. 1 is a three-dimensional structural diagram of an engine with the stepped cylinder head cover shown in the embodiments of the present application; DETAILED DESCRIPTION

[0024] The preferred embodiments of the present application will be described in more detail with reference to the drawings. Although the preferred embodiments of the present application are shown in the drawings, it is to be understood that the present application can be carried out in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0025] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0026] It should be understood that although the terms "first", "second", "third" and the like can be employed in the present application to describe various information, these information are not to be limited by these terms. These terms are only used to distinguish one piece of information from another. For example, a first information can also be termed a second information, and, similarly, a second information can also be termed a first information, without departing from the scope of the present application. Therefore, the features defined by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0027] Embodiment One

[0028] In the existing cylinder cover, the cylinder cover, spark plug and ignition coil are arranged in sequence along the height direction, occupying too much height space. In the cylinder cover, there are also components such as valve train system, and the ignition system interferes with the arrangement of other components at the center of the structural axis of the cylinder cover, which leads to more complex circuit layout in the cylinder cover.

[0029] Therefore, in order to reasonably arrange the space of each component in the cylinder cover, the embodiment of the present application provides a stepped cylinder cover, as shown in Figure 1 The stepped cylinder cover comprises a cylinder cover shell 1 mounted on the top surface of the cylinder cover of the engine.

[0030] Specifically, the top wall 10 and the side wall 11 of the cylinder cover shell 1 form a cavity for sealing the engine cylinder cover. The cavity of the cylinder cover shell 1 surrounds the top of the engine cylinder cover, and components such as valve train system are installed in the cavity.

[0031] Further, as shown in Figure 2As shown, the side wall 11 of the cylinder head cover shell 1 is provided with a coil mounting boss 12 extending in the width direction, and the platform 121 of the coil mounting boss 12 is used to mount the ignition coil 2 which is electrically connected to the spark plug in the cylinder head cover shell 1.

[0032] Specifically, the height distance difference between the platform 121 of the coil mounting boss 12 and the side wall 11 of the cylinder head cover shell 1 is greater than or equal to the height of the ignition coil 2

[0033] As shown, the ignition coil 2 is mounted on the platform 121 of the coil mounting boss 12, and the ignition coil 2 is located below the top wall 10 of the cylinder head cover shell 1. Figure 2

[0034] In order to fix the ignition coil 2, the platform 121 of the coil mounting boss 12 is arranged with M coil mounting holes 120 in the length direction, and M is an integer greater than or equal to 1.

[0035] In order to connect the high-voltage wire of the ignition coil 2 to the spark plug in the cylinder head cover, the top wall 10 of the cylinder head cover shell 1 is provided with N sleeve mounting holes 100, and the high-voltage wire of the ignition coil 2 passes through the sleeve mounting hole 100 to electrically connect the spark plug, and N is an integer greater than or equal to 1.

[0036] Further, the sleeve mounting hole 100 is provided with a wire sleeve 122. The high-voltage wire of the ignition coil 2 connects the spark plug in the cylinder head shell through the wire sleeve 122.

[0037] In order to prevent the ignition coil 2 from being affected by the high temperature of the lower cylinder body, further, the lower part of the ignition coil 2 containing platform is provided with a heat insulation plate 13. Specifically, the plate surface of the heat insulation plate 13 extends along the length direction of the cylinder head cover shell 1.

[0038] In the embodiment of the present application, the original fixed connection ignition system is divided into two parts, the ignition coil 2 is mounted on the coil mounting boss 12 area of the cylinder head cover shell 1, the spark plug is mounted on the top wall 10 of the cylinder head cover shell 1, and the ignition coil 2 and the spark plug are connected by wire. The ignition coil 2 is transferred from the top surface of the cylinder head cover shell 1 to the side surface of the cylinder head cover shell 1, which reduces the space occupied by the ignition system on the top surface of the cylinder head cover, thereby increasing the accommodation space for other components.

[0039] Embodiment two

[0040] An engine comprising the stepped cylinder head cover of embodiment one.

[0041] Embodiment three

[0042] A vehicle comprising the engine of embodiment two.​

[0043] Having described various embodiments of the application above, the descriptions are not exhaustive and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art. The selection of terms to be used in the description is intended to best explain the principles of the embodiments, practical application, or improvement over the technology in the art, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A stepped cylinder head cover characterized by, The cylinder head cover body (1) is installed on the cylinder head top surface; The top wall (10) and the side wall (11) of the cylinder head cover body (1) form a cavity for sealing the engine cylinder head; the side wall (11) of the cylinder head cover body (1) is provided with a coil mounting boss (12) extending along the width direction, the platform (121) of the coil mounting boss (12) is used for mounting the ignition coil (2), and the ignition coil (2) is electrically connected with the spark plug in the cylinder head cover body (1); The height difference between the platform (121) of the coil mounting boss (12) and the top wall (10) of the cylinder head cover body (1) is greater than or equal to the height of the ignition coil (2).

2. A stepped cylinder head cover according to claim 1, characterized in that The platform (121) of the coil mounting boss (12) is provided with M coil mounting holes (120) arranged along the length direction, and M is an integer greater than or equal to 1.

3. A stepped cylinder head cover as set forth in claim 1 wherein, The top wall (10) of the cylinder head cover body (1) is provided with N sleeve mounting holes (100), the high-voltage lead of the ignition coil (2) passes through the sleeve mounting hole (100) to electrically connect the spark plug, and N is an integer greater than or equal to 1.

4. A stepped cylinder head cover as claimed in claim 3, characterised in that, The sleeve mounting hole (100) is provided with a lead sleeve (122); The high-voltage lead of the ignition coil (2) connects the spark plug in the cylinder head cover body (1) through the lead sleeve (122).

5. A stepped cylinder head cover as set forth in claim 1 wherein, The lower part of the ignition coil (2) containing platform is provided with a heat insulation plate (13).

6. A stepped cylinder head cover as claimed in claim 5, characterised in that, The plate surface of the heat insulation plate (13) extends along the length direction of the cylinder head cover body (1).

7. An engine characterized by, The stepped cylinder head cover comprises the stepped cylinder head cover according to any one of claims 1 to 6.

8. A vehicle characterized by comprising: The engine comprises the engine according to claim 7.

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