CN220353949U - Engine cylinder cover and engine - Google Patents

Abstract

The utility model discloses an engine cylinder cover and an engine, wherein the engine cylinder cover comprises a cylinder cover body, an oil sprayer hole is formed in the cylinder cover body, the oil sprayer is arranged in the oil sprayer hole through an oil sprayer bushing, an annular oil drain groove is formed in the side wall surface of the oil sprayer hole, the annular oil drain groove is communicated with a containing cavity among the oil sprayer hole, the bushing and the oil sprayer, and at least one oil drain hole is formed in the annular oil drain groove; according to the utility model, through improving the structure of the cylinder cover, a large amount of engine oil is prevented from being stored, and the engine oil pollution of the oil sprayer bushing caused by the disassembly of the oil sprayer is avoided; meanwhile, the annular oil drain groove is combined with the oil drain hole, and impurities deposited in the engine oil are timely drained, so that the impurities are prevented from flowing into the cylinder and the bottom hole of the oil sprayer.

Description

Engine cylinder cover and engine

Technical Field

The utility model belongs to the technical field of engine parts, and particularly relates to an engine cylinder cover and an engine.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The engine cylinder head is one of the main components of the engine, the main function being to seal the upper part of the cylinder and to form a combustion chamber with the piston crown and the cylinder. The engine cylinder head is provided with the mounting hole of the oil sprayer, the oil sprayer is fixedly mounted on the engine cylinder head through the oil sprayer bushing, the structure of the existing engine cylinder head mounting oil sprayer is shown in fig. 1, the oil sprayer 2 is mounted in the oil sprayer hole on the cylinder head body 1 through the oil sprayer bushing 3, in the working process, lubricating oil in the rocker arm assembly splashes everywhere due to up-and-down swinging of the rocker arm assembly, the lubricating oil splashed into the oil sprayer hole of the cylinder head, the bushing and the containing cavity 4 between the oil sprayers cannot flow out, when the engine is disassembled and inspected, firstly the oil sprayer is disassembled, the engine oil with the containing cavity can flow into the bottom of the bushing and is difficult to clean, when the cylinder head is restored to work, the engine oil remained at the contact surface 5 of the oil sprayer and the bushing is affected by high temperature, so that the engine oil is accumulated carbon, the oil sprayer bushing is adhered to the oil sprayer, and the oil sprayer cannot be disassembled when the engine is disassembled and inspected.

Disclosure of Invention

The utility model aims to provide an engine cylinder cover, which can avoid the problem of engine sintering caused by the pollution of oil of an oil sprayer bushing due to the disassembly of the oil sprayer oil caused by the mass storage of lubricating oil.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

in a first aspect, an embodiment of the utility model provides an engine cylinder head, which comprises a cylinder head body, wherein an oil injector hole is formed in the cylinder head body, an oil injector is installed in the oil injector hole through an oil injector bushing, an annular oil drain groove is formed in the side wall surface of the oil injector hole, the annular oil drain groove is communicated with a containing cavity among the oil injector hole, the bushing and the oil injector, and at least one oil drain hole is formed in the annular oil drain groove.

As a further technical scheme, the outer edge at the top of the fuel injector bushing is provided with a bushing chamfer.

As a further technical scheme, a plurality of oil drain holes are uniformly and obliquely arranged along the circumferential direction of the annular oil drain groove.

As a further technical scheme, the inclination angle of the oil drain hole is 10-15 degrees.

As a further aspect, the opening of the annular bleed groove is directed towards the top of the injector liner.

As a further technical solution, the upper surface of the annular oil drain groove is higher than the top surface of the injector bushing, and the lower surface of the annular oil drain groove is lower than the top surface of the injector bushing.

As a further technical scheme, the lower surface of the annular oil drain groove is obliquely arranged towards the oil drain hole.

As a further technical scheme, the oil drain hole is communicated with an oil return channel on the cylinder head body.

As a further technical scheme, the number of the oil drain holes is 4-8.

In a second aspect, embodiments of the present utility model provide an engine comprising the engine cylinder head of the first aspect.

The beneficial effects of the embodiment of the utility model are as follows:

according to the engine cylinder cover provided by the utility model, the annular oil drain grooves are arranged in the oil sprayer holes of the cylinder cover body, so that the pollution of lubricating oil to the oil sprayer bushing can be avoided, and the oil is ensured to be recovered in time by arranging the plurality of oil drain holes on the annular oil drain grooves; through reasonable arrangement of the bushing height of the oil sprayer, and the chamfer angle is arranged at the top of the bushing, the engine oil is ensured to smoothly flow into the annular oil drain groove; through the structure, a large amount of engine oil is prevented from being stored, and engine sintering caused by the fact that the oil of the oil injector is detached to pollute the oil injector bushing is avoided; meanwhile, the annular oil drain groove is combined with the oil drain hole, and impurities deposited in the engine oil are timely drained, so that the impurities are prevented from flowing into the cylinder and the bottom hole of the oil sprayer.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic diagram of a prior art engine cylinder head;

fig. 2 is a schematic view of the structure of the engine cylinder head of the present utility model.

The schematic is used only as schematic;

1, a cylinder cover body; 2. an oil injector; 3. a fuel injector liner; 4. a cavity; 5. the contact surface of the fuel injector and the bushing; 6. chamfering the bushing; 7. an annular oil drain groove; 8. and an oil drain hole.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

Interpretation of related terms:

injector liner: the fuel injector is fixedly arranged on a cylinder cover of the engine and is fixed in the fuel injector bushing;

rocker arm assembly: the important components of the engine generally consist of a bracket, a bushing, roller pins and a roller shaft, and the rotation motion of a cam shaft is converted into the up-and-down swing of a rocker arm to control the opening of a valve;

and (3) an oil injector: mainly comprises an oil nozzle and an oil sprayer body, and is arranged on a cylinder cover.

Example 1

In order to solve the problem of the engine cylinder head shown in fig. 1, in an exemplary embodiment of the present utility model, as shown in fig. 2, an engine cylinder head comprises a cylinder head body 1, wherein a fuel injector hole is arranged on the cylinder head body 1 and is used for installing a fuel injector 2, specifically, the fuel injector 2 is installed in the fuel injector hole through a fuel injector bushing 3, an annular oil drain groove 7 is arranged on the side wall surface of the fuel injector hole, the annular oil drain groove 7 is communicated with a containing cavity 4 among the fuel injector hole, the bushing and the fuel injector, and at least one oil drain hole 1 is arranged in the annular oil drain groove.

In a specific implementation manner of this embodiment, the outer edge of the top of the injector bushing 3 is provided with a bushing chamfer 6, and when the oil and the lubricating oil are in the cavity 4, the lubricating oil falls onto the inclined plane formed by the bushing chamfer 6 and then enters the annular oil drain groove 7.

In a specific implementation manner of this embodiment, the plurality of oil drain holes 8 are uniformly inclined along the circumferential direction of the annular oil drain groove 7, specifically, the inclination angle of the oil drain holes is 10 ° -15 °, so that the lubricating oil in the oil drain holes can flow out of the oil drain holes conveniently.

In a specific implementation of this embodiment, the opening of the annular oil drain groove 7 faces the top of the injector liner 3, and the upper surface of the annular oil drain groove 7 is higher than the top surface of the injector liner 3, and the lower surface of the annular oil drain groove 7 is lower than the top surface of the injector liner 3, so that the lubricating oil can enter the annular oil drain groove.

In a specific implementation manner of this embodiment, the lower surface of the annular oil drain groove 7 is inclined towards the oil drain hole 8, that is, the lower surface of the annular oil drain groove has a certain gradient, and the lubricating oil entering the annular oil drain groove 7 can flow to the oil drain hole 8 under the action of gravity, and specifically, the number of the oil drain holes 8 is set to be 4-8.

In a specific implementation manner of this embodiment, the oil drain hole 8 is communicated with an oil return channel on the cylinder head body 1, and then leaks into the upper part of the cylinder head to circularly lubricate.

The working principle of the engine cylinder cover provided by the embodiment is as follows:

when the engine moves, most of lubricating oil remained in the cavity among the cylinder cover, the bushing and the oil sprayer reaches the bushing 3 of the oil sprayer at first, flows into the annular oil drain groove 7 along the bushing chamfer 6 and then flows into the oil drain hole 8, and leaks into the upper part of the cylinder cover through a channel for circulating lubrication.

Example 2

In an exemplary embodiment of the present utility model, an engine is provided that includes the engine cylinder head of example 1.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides an engine cylinder head, its characterized in that includes the cylinder head body, set up the sprayer hole on the cylinder head body, the sprayer passes through the sprayer bush and installs in the sprayer hole, sets up annular oil drain groove on the lateral wall face in sprayer hole, annular oil drain groove is linked together with the appearance chamber between sprayer hole, bush, the sprayer, set up at least one oil drain hole in the annular oil drain groove.

2. The engine cylinder head of claim 1, wherein an outer edge of the injector liner top is provided with a liner chamfer.

3. The engine cylinder head of claim 1, wherein the plurality of oil drain holes are uniformly inclined along the circumferential direction of the annular oil drain groove.

4. The engine cylinder head as set forth in claim 3, wherein said oil drain hole is inclined at an angle of 10 ° to 15 °.

5. The engine cylinder head of claim 1, wherein the annular drain groove opens toward a top of the injector liner.

6. The engine cylinder head of claim 5, wherein an upper surface of the annular oil drain groove is above a top surface of the injector liner and a lower surface of the annular oil drain groove is below the top surface of the injector liner.

7. The engine cylinder head as set forth in claim 6, wherein a lower surface of said annular oil drain groove is disposed obliquely toward the oil drain hole.

8. The engine cylinder head of claim 1, wherein the drain hole communicates with an oil return passage in the cylinder head body.

9. The engine cylinder head of claim 1, wherein the number of oil drain holes is set to 4-8.

10. An engine comprising the engine cylinder head of any one of claims 1-9.