CN218787147U

CN218787147U - Variable swirl ratio air inlet cylinder cover

Info

Publication number: CN218787147U
Application number: CN202222694373.6U
Authority: CN
Inventors: 张璇; 刘腾; 谢小挺
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-04-04
Anticipated expiration: 2032-10-13

Abstract

The utility model belongs to the technical field of the internal-combustion engine admits air, a variable vortex ratio advances cylinder head is disclosed. The cylinder cover comprises an air inlet, a first pipeline and a second pipeline, wherein one end of the first pipeline and one end of the second pipeline are respectively communicated with the air inlet, the first pipeline and the second pipeline are communicated at the other end of the first pipeline and the second pipeline, a fixing surface is arranged on the outer wall of a cylinder cover body and is arranged in the circumferential direction of the air inlet, a baffle is detachably connected to the fixing surface, a shielding part is formed on the baffle, and the shielding part is arranged between the air inlet and the second pipeline; the problem of the swirl ratio in the lower air inlet cylinder cover of prior art can not change and increase experimental error is solved.

Description

Variable swirl ratio air inlet cylinder cover

Technical Field

The utility model relates to an internal-combustion engine technical field that admits air especially relates to a variable vortex ratio advances cylinder head.

Background

In the prior art, a large number of experiments need to be performed on an engine, but the air inlet of the engine cylinder cover in the prior art can only provide a single swirl ratio due to the fixed design shape, and if experimental parameters of the engine under swirl ratios of other values are needed, the engine with other swirl ratios needs to be replaced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a variable vortex ratio advances cylinder head, solves the vortex ratio of admitting air in the cylinder head under the prior art and can not change the problem that increases the experimental error.

To achieve the purpose, the utility model adopts the following technical proposal: the utility model provides a variable vortex ratio advances cylinder head, including air inlet, first pipeline and second pipeline, the one end of first pipeline and second pipeline respectively with the air inlet intercommunication, first pipeline with the second pipeline is provided with the stationary plane at other end intercommunication on the cylinder cap body outer wall, the stationary plane sets up air inlet circumference, can dismantle on the stationary plane and be connected with the baffle, be formed with on the baffle and shield the portion, shield the portion setting and be in the air inlet with between the second pipeline.

Preferably, the area of the shielding part is smaller than or equal to the area of the joint of the air inlet and the second pipeline.

Preferably, the tail end of the baffle is bent to form a fixing part, a through hole is formed in the fixing part, a screw hole is formed in the fixing surface, and a screw penetrates through the through hole to be connected with the screw hole.

Preferably, the baffle is further provided with a flow guide part, the flow guide part is arranged on one side, away from the fixing part, of the shielding part, and the flow guide part can guide airflow into the first pipeline.

Has the advantages that: through set up the baffle that can dismantle on the stationary plane, the portion of shielding on the baffle can block the air current flow that gets into the second pipeline, reduce the air current flow promotion in the second pipeline, make the air current that enters into in the second pipeline enter into first pipeline, promote the gaseous flow in the first pipeline, make the vortex ratio that first pipeline and second pipeline join after the other end produce the change, have the baffle of different area shielding portion through switching simultaneously, realize in same engine, change the vortex ratio, promote the accuracy of experiment.

Drawings

FIG. 1 is a sectional view of the cylinder head of the present invention;

fig. 2 is a side view of the cylinder head main body of the present invention.

In the figure: 1-a cylinder cover body; 11-an air inlet; 12-a first conduit; 13-a second line; 14-a fixed surface; 2-a baffle plate; 21-a shielding part; 22-a flow guide part; 23-a fixed part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The swirl ratio of an internal combustion engine or an engine in the prior art can not be adjusted, or the engine needs to be disassembled in a complex way during adjustment, when the experiment is needed for the engine, the engine needs to be switched to switch different swirl ratios, so that the error of the experiment is increased, and the final experiment is caused to fail.

In order to solve the problem, as shown in fig. 1 to 2, the utility model provides a variable vortex ratio advances cylinder head, including air inlet 11, first pipeline 12 and second pipeline 13, the one end of first pipeline 12 and second pipeline 13 communicates with air inlet 11 respectively, first pipeline 12 and second pipeline 13 communicate at the other end, be provided with stationary plane 14 on the cylinder cap body 1 outer wall, stationary plane 14 sets up in air inlet 11 circumference, can dismantle on the stationary plane 14 and be connected with baffle 2, be formed with shielding portion 21 on the baffle 2, shielding portion 21 sets up between air inlet 11 and second pipeline 13.

Generally, after receiving airflow, the first pipeline 12 and the second pipeline 13 guide the airflow and converge at the other end to form a vortex, the baffle 2 with a shielding effect is arranged on the second pipeline 13, the airflow entering the second pipeline 13 is changed to be reduced, meanwhile, the airflow flow entering the first pipeline 12 is increased, finally, the vortex generated after the two pipelines finally converge is changed, and further, the vortex ratio is changed, and as the baffle 2 and the fixing surface 14 are detachably connected, the size of the shielding part 21 is changed by replacing different baffles, and further, the vortex ratio is adjusted and changed, so that a single engine can generate different vortex ratios, the accuracy of an experiment is improved, the baffle 2 is connected to the fixing surface 14, and a worker can conveniently detach the baffle by using a tool.

The area of the shielding part 21 of the utility model is smaller than or equal to the area of the joint of the air inlet 11 and the second pipeline 13.

The shielding parts 21 on the baffle 2 are different in size, when the area of the shielding parts 21 is smaller than the area of the joint of the air inlet 11 and the second pipeline 13, the flow in the second pipeline 13 can be reduced, when the area of the shielding parts 21 is larger than or equal to the area of the joint of the second pipeline 13, the air flow can be prevented from entering the second pipeline 13, the air flow can completely flow through the first pipeline 12 and cannot enter the second pipeline 13, the area of each group of shielding parts 21 corresponds to a group of different vortex ratios, and the size of the vortex ratio can be changed by replacing the baffle 2 in an experiment.

The utility model discloses a 2 terminal bending type of baffle have fixed part 23, are formed with the through-hole on the fixed part 23, are formed with the screw on the stationary plane 14, and the screw passes the through-hole and is connected with the screw.

The baffle 2 is replaced by disassembling the screw, so that the eddy current ratio is changed.

It should be noted that other ways of fixing the shielding portion 21 of the baffle plate 2 to the opening of the second pipeline 13 may be used, such as inserting or magnetically attaching the baffle plate 2.

Still be provided with water conservancy diversion portion 22 on baffle 2, water conservancy diversion portion 22 sets up in the one side that fixed part 23 was kept away from to shielding portion 21, and water conservancy diversion portion 22 can prevent the loss of air current, promotes the accurate degree of experiment with air current water conservancy diversion to first pipeline 12 in can be fast through above-mentioned water conservancy diversion portion 22 in first pipeline 12 with the air current water conservancy diversion.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a variable swirl ratio advances cylinder head, includes air inlet (11), first pipeline (12) and second pipeline (13), the one end of first pipeline (12) and second pipeline (13) respectively with air inlet (11) intercommunication, first pipeline (12) with second pipeline (13) are at the other end intercommunication, its characterized in that is provided with stationary plane (14) on cylinder cap body (1) outer wall, stationary plane (14) set up air inlet (11) circumference, can dismantle on stationary plane (14) and be connected with baffle (2), be formed with on baffle (2) and shield portion (21), shield portion (21) set up air inlet (11) with between second pipeline (13).

2. The variable swirl ratio cylinder head according to claim 1, characterized in that the area of the shielding portion (21) is smaller than or equal to the area where the intake port (11) and the second conduit (13) meet.

3. The variable swirl ratio cylinder head according to claim 1, wherein the baffle plate (2) is bent at its distal end to form a fixing portion (23), the fixing portion (23) is formed with a through hole, and the fixing surface (14) is formed with a screw hole through which a screw is connected.

4. The cylinder head according to claim 3, wherein a flow guide (22) is further provided on the baffle (2), the flow guide (22) being provided on a side of the shield (21) remote from the fixing portion (23), the flow guide (22) being capable of guiding the gas flow into the first duct (12).