阅读说明：本技术 一种缸盖罩排水结构 (Cylinder head cover drainage structure ) 是由 刘显宏 董家枝 磨小重 蒙小聪 覃海玉 许罗 于 2019-10-18 设计创作，主要内容包括：本发明涉及发动机零部件领域,具体是一种缸盖罩排水结构,包括贯穿设置在气缸盖罩的凹陷部的下方且与凹陷部连通的进水道,设置在气缸盖内的出水道；出水道与进水道连通,进水道的进水口的高度小于凹陷部的底部,出水道的出水口设置在气缸盖的侧壁上。本发明解决了气缸盖罩侧边难以设计排水结构的问题,采用从气缸盖罩底部经由气缸盖端面的排水方式,结构简单,加工成本低。(The invention relates to the field of engine parts, in particular to a cylinder head cover drainage structure which comprises a water inlet channel and a water outlet channel, wherein the water inlet channel is arranged below a concave part of a cylinder head cover in a penetrating manner and is communicated with the concave part; the water outlet channel is communicated with the water inlet channel, the height of a water inlet of the water inlet channel is smaller than the bottom of the concave part, and a water outlet of the water outlet channel is arranged on the side wall of the cylinder cover. The invention solves the problem that the side edge of the cylinder head cover is difficult to design a drainage structure, adopts a drainage mode from the bottom of the cylinder head cover to the end surface of the cylinder head cover, and has simple structure and low processing cost.)

1. A cylinder head cover drainage structures which characterized in that: the water inlet channel (120) penetrates through the lower part of a concave part (110) of a cylinder head cover body (100) and is communicated with the concave part (110), and the water outlet channel (210) is arranged in a cylinder head (200); the water outlet channel (210) is communicated with the water inlet channel (120), the height of a water inlet (121) of the water inlet channel (120) is smaller than the bottom of the concave part (110), and a water outlet (220) of the water outlet channel (210) is arranged on the side wall of the cylinder cover (200).

2. A cylinder head cover drain structure according to claim 1, wherein: the water inlet channel (120) is disposed at one end of the cylinder head cover body (100) near the water outlet (220).

3. A cylinder head cover drain structure according to claim 1 or 2, characterized in that: the water outlet (220) is arranged on the end surface of the cylinder cover (200).

4. A cylinder head cover drain structure according to claim 1 or 2, characterized in that: the water outlet channel (210) is communicated with each other and comprises a horizontal water outlet channel (211) and a vertical water outlet channel (212), and the vertical water outlet channel (212) is coaxial with the water inlet channel (120).

5. A cylinder head cover drain structure according to claim 4, wherein: the vertical water outlet channel (212) and the water inlet channel (120) have the same inner diameter.

Technical Field

The invention relates to the field of engine parts, in particular to a cylinder head cover drainage structure.

Background

In diesel engine design development, cylinder head cover design structure is complicated, need design into the depressed part at some intermediate position, and in the engine cleaning process, the depressed part exists ponding easily, and ponding is difficult clean up, and long-time ponding can cause spare part to corrode, also causes the cylinder head cover to become invalid easily.

In order to solve the above problems, chinese patent CN206309488U proposes a drainage type cylinder head cover, which includes a cylinder head cover body, wherein the middle of the top of the cylinder head cover body protrudes inwards to form a concave part, and the side wall of the concave part is provided with a water outlet for draining accumulated water; the labyrinth cover plate is arranged between the lower concave part and the side wall of the cylinder head cover in a sealing manner, so that a labyrinth passage for oil-gas separation is formed in the cylinder head cover body; the water outlet is positioned at the rear end of the cylinder cover along the length direction of the cylinder cover; the water outlet is arranged at the rear end of the lower concave part along the length direction, and the accumulated water at the top of the lower concave part is directly discharged along the length direction of the cylinder head cover body.

Also, as disclosed in CN202081998U, the bottom of the cylinder head cover of an automobile engine is provided with a drainage groove, and further, a water retaining ring-shaped boss is disposed around the bolt hole, so that the cylinder head can meet the requirement of natural drainage without affecting the internal structure, mounting structure and usability of the cylinder head cover

Both of the two structures set up drainage structures on the side face of the cylinder head cover body, although the problem of water accumulation of the cylinder head cover of the engine can be solved, the water accumulation on the top of the cylinder head cover can be effectively discharged, certain problems still exist, the structure of the cylinder head cover is more compact under the requirement of engine light weight, the water outlet structure is designed on the side portion of the cylinder head cover and is difficult to realize, the arrangement space is insufficient, the structural design is more complex, and particularly in a small-sized engine, the water outlet structure for designing the side wall of the cylinder head cover is difficult to realize.

Disclosure of Invention

The invention provides a cylinder head cover drainage structure, which solves the problem that the side edge of a cylinder head cover is difficult to design a drainage structure.

The technical scheme of the invention is as follows:

in a compact cylinder head cover body, a ponding drainage structure is difficult to design on the side wall of the cylinder head cover body, and the cylinder head cover drainage structure comprises a water inlet channel and a water outlet channel, wherein the water inlet channel is arranged below a concave part of the cylinder head cover body in a penetrating manner and is communicated with the concave part; the water outlet channel is communicated with the water inlet channel, the height of a water inlet of the water inlet channel is smaller than that of the bottom of the concave part, accumulated water is conveniently and completely discharged, and a water outlet of the water outlet channel is formed in the side wall of the cylinder cover. In rainy days, car washing or engine washing, a large amount of water can be accumulated on the engine cylinder head cover body and can not be discharged, accumulated water of the cylinder head cover body flows through the water outlet channel on the cylinder cover from the water inlet of the concave part of the cylinder head cover body from top to bottom through the water inlet channel and is discharged from the water outlet on the side wall of the cylinder cover.

The water inlet channel is arranged at one end of the cylinder head cover body close to the water outlet, the water inlet channel is close to the water outlet, the length of a drainage channel is reduced, the drainage resistance is reduced, and the drainage efficiency is high; in addition, when the accumulated water on the upper part of the engine is conveniently discharged, one end of the engine is lifted, the accumulated water is gathered near the drainage structure, and the drainage efficiency is improved.

Preferably, the water outlet is formed in the end face of the cylinder cover, accumulated water is prevented from being discharged to the air inlet side and the air exhaust side of the engine, and the influence of accumulated water discharge on key air inlet and exhaust component parts of the engine is reduced.

Preferably, the water outlet channel is communicated with each other and comprises a horizontal water outlet channel and a vertical water outlet channel, the vertical water outlet channel is coaxial with the water inlet channel, the water outlet channel is conveniently machined from the side wall, the water inlet channel is conveniently machined from the top of the cylinder head cover body, and the machining cost is reduced.

Preferably, the vertical water outlet channel and the water inlet channel have the same inner diameter, the vertical water outlet channel and the water inlet channel can be machined by one drill, and the water inlet channel and the water outlet channel can be machined by drilling twice, so that the machining procedures are reduced, and the cost is reduced.

The invention also has the following beneficial effects:

1. the water drainage mode from the bottom of the cylinder head cover body through the end face of the cylinder cover is adopted, water is drained from top to bottom, the structure is simple, and the problem of accumulated water drainage of the compact cylinder head cover body is solved.

2. The drainage channel is short, accumulated water is prevented from being drained to the air inlet side and the air exhaust side of the engine, and the influence of accumulated water drainage on key parts of the engine is reduced.

3. The water inlet channel and the water outlet channel can be processed by drilling twice, the processing procedure is simple, and the cost is reduced.

Drawings

Fig. 1 is a schematic perspective view of a cylinder head cover drain structure according to the present invention.

Fig. 2 is a schematic top view of the structure of fig. 1.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic view of the mounting structure of a cylinder head cover drain structure according to the present invention.

In the figure: 100-a cylinder head cover body, 110-a concave part, 120-a water inlet channel, 121-a water inlet, 200-a cylinder cover, 210-a water outlet channel, 211-a horizontal water outlet channel, 212-a vertical water outlet channel and 220-a water outlet.

Detailed Description

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, and the described embodiments are only some embodiments, not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.