CN214944600U

CN214944600U - Air inlet channel structure, engine and automobile

Info

Publication number: CN214944600U
Application number: CN202120738457.8U
Authority: CN
Inventors: 张孚; 干传巍
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-30
Anticipated expiration: 2031-04-08

Abstract

The utility model provides an intake duct structure, engine and car belongs to car technical field, and the intake duct structure includes the intake duct main part, and the lower extreme of intake duct main part is equipped with the air flue throat, is equipped with the air flue pipe in the intake duct main part, and the longitudinal section of intake duct main part possesses on the air flue along the line and the air flue down along the line, and the air flue down along the line includes the lower hypomere along the line that connects gradually from bottom to top and the upper segment along the line down, and the air flue is the segmental arc along the line and the upper segment along the line down, and the segmental arc on the air flue all reduces to the arc camber from last down. The utility model provides a pair of intake duct structure does not make the adjustment in air flue throat position, under the unchangeable prerequisite of the minimum sectional area of air flue, can not reduce the flow coefficient of intake duct when improving the tumble ratio.

Description

Air inlet channel structure, engine and automobile

Technical Field

The utility model belongs to the technical field of the car, more specifically say, relate to an intake duct structure, engine and car.

Background

The organized rotational flow formed by the gasoline engine during the intake process and rotating around the vertical line of the cylinder axis is called tumble flow. The most direct and effective method for improving the rolling strength of the gas in the cylinder is to improve the rolling ratio of an air inlet channel, wherein the rolling ratio is the ratio of the rotating speed of the mixed gas rolling in a combustion chamber to the rotating speed of an engine, and the larger the numerical value is, the better the combustion effect is, and the stronger the engine power is.

In the design process of a conventional air passage, the airflow flowing direction is changed by adjusting the position structure of a throat opening along the lower line of the air passage so as to improve the tumble ratio, however, the method often causes the minimum sectional area of the air passage to be reduced, the flow coefficient to be seriously reduced, and then the air inflow of an engine is influenced, and the power of the engine is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an intake duct structure aims at solving and changes the mode that the air current flow direction is compared in order to improve the tumble through adjustment air flue throat position structure down along the line, can lead to the air flue minimum sectional area to reduce, and leads to flow coefficient to reduce serious problem.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an air inlet passage structure, including the air inlet passage main part, the lower extreme of air inlet passage main part is equipped with the air flue throat, be equipped with the air flue pipe in the air inlet passage main part, the longitudinal section of air inlet passage main part possesses on the air flue along the line and the air flue down along the line, the air flue down along the line includes lower hypomere along the line and the lower upper segment along the line that connect gradually from bottom to top, on the air flue along the line with the upper segment along the line is the segmental arc down, just the segmental arc on the air flue along the line all reduces from last to the arc camber down gradually.

As another embodiment of the application, a tangent of the inlet end of the upper segment along the lower line and the upper line of the airway are intersected between the airway tube and the laryngeal inlet of the airway.

As another embodiment of this application, on the air flue along the line with the arc centre of a circle of lower line upper segment all is located the below of intake duct main part.

As another embodiment of the present application, the lower segment of the lower line is a straight segment and is in smooth transition with the upper segment of the lower line.

As another embodiment of the present application, the inlet body, the throat and the airway tube are integrally formed.

The utility model provides a pair of intake duct structure's beneficial effect lies in: compared with the prior art, the longitudinal section of intake duct main part possesses on the air flue along the line and the air flue along the line down, and the air flue is along the line including the lower hypomere and the upper segment along the line down that connect gradually from bottom to top down, and the upper segment along the line is the segmental arc on the air flue along the line and the upper segment along the line down, and the segmental arc on the air flue along the line all reduces from the top down arc camber. The upper segment along the line and the lower segment along the line on the air flue are arc sections, so that a guide structure for air flow can be formed, the arc sections of the upper segment along the line can enable the air flow at the bottom of a part of the air inlet channel body to be guided to the air flue along the line, the forward air flow field strength is increased, and the air flue tumble ratio is improved. The utility model provides a pair of intake duct structure does not make the adjustment in air flue throat position, under the unchangeable prerequisite of the minimum sectional area of air flue, can not reduce the flow coefficient of intake duct when improving the tumble ratio.

The utility model also provides an engine, include the intake duct structure.

The utility model provides a pair of engine compares with prior art, owing to used this intake duct structure, consequently possesses the beneficial effect the same with the intake duct structure, no longer gives unnecessary details here.

The utility model also provides an automobile, include the intake duct structure.

The utility model provides a pair of automobile compares with prior art, owing to used this intake duct structure, consequently possesses the beneficial effect the same with the intake duct structure, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an air inlet structure according to an embodiment of the present invention;

fig. 2 is an air passage flow direction schematic diagram of an air inlet structure provided by the embodiment of the present invention.

In the figure: 1. along the airway; 2. an upper section of the lower line; 3. a lower section of the lower line; 4. an airway tube; 5. an airway orifice; 6. an air duct seat ring; 7. and a cylinder head.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a description will now be given of an air inlet structure according to the present invention. The utility model provides an intake duct structure, includes the intake duct main part, and the lower extreme of intake duct main part is equipped with air flue throat 5, is equipped with air flue pipe 4 in the intake duct main part, and the longitudinal section of intake duct main part possesses 1 and air flue down the line on the air flue, and the air flue is down the line including lower hypomere 3 and lower upper segment 2 along the line that connect gradually from bottom to top down along the line, and 1 and lower upper segment 2 along the line on the air flue are the segmental arc, and 1's segmental arc on the air flue is all reduced gradually from last to lower segmental arc camber on the line.

Wherein, the lower end of the air inlet main body is connected on a cylinder cover 7 through an air passage seat ring 6, and an air passage throat 5 is close to the air passage seat ring 6.

The utility model provides a pair of intake duct structure compares with prior art, and the longitudinal section of intake duct main part possesses on the air flue 1 along the line and air flue down along the line, and the air flue is down along the line including the lower hypomere 3 along the line that connects gradually from bottom to top and lower upper segment 2 along the line, and 1 along the line and lower upper segment 2 along the line are the segmental arc on the air flue, and 1's segmental arc on the air flue is from the top down the arc camber all reduces gradually. The upper segment 2 along 1 and lower line of following on the air flue is the segmental arc, can form the guide structure to the air current, and the segmental arc of upper segment 2 along the following line can make the air current of part intake duct body bottom be led along 1 on the air flue, has increased forward air current flow field intensity, improves the air flue tumble ratio. The utility model provides a pair of intake duct structure does not make the adjustment in 5 positions of air flue laryngeal opening, under the unchangeable prerequisite of the minimum sectional area of air flue, can not reduce the flow coefficient of intake duct when improving the tumble ratio.

As a specific embodiment of the air inlet structure provided by the present invention, please refer to fig. 2, the tangent line of the inlet end of the upper section 2 along the lower line intersects with the air passage along the upper line 1 between the air passage conduit 4 and the air passage throat 5.

In this embodiment, the structural design along the air flue is down, can not reduce the flow coefficient, improvement tumble ratio that can be fine. Because the resistance in the air flow flowing process is increased if the junction is too close to the upper part, the flow coefficient of the air passage is reduced; and if the junction is too low, the effect of guiding the airflow at the bottom of the air passage into the forward airflow cannot be achieved, and the effect of improving the tumble ratio cannot be well achieved.

As a specific implementation manner of the air inlet structure provided by the present invention, please refer to fig. 1, the arc circle centers of the upper section 2 along the upper line 1 and the lower line on the air passage are all located below the air inlet main body.

In this embodiment, the crooked direction of upper segment 2 is unanimous along 1 and lower following on the air flue, and the air inlet main part forms from the structure of upper end to the necking down gradually of lower extreme, and the gas of being convenient for passes through air flue throat 5 entering through the air inlet main part.

As a specific embodiment of the air inlet structure provided by the present invention, please refer to fig. 1, the lower section 3 along the lower line is a straight line section, and is in smooth transition with the upper section 2 along the lower line, the upper section 2 along the lower line is the upper section 2 along the lower line.

In this embodiment, the upper section 2 along the lower line and the lower section 3 along the lower line are in smooth transition, so that the airflow flows more smoothly, the flow resistance is reduced, and the flow coefficient is improved.

As a specific embodiment of the utility model provides a pair of intake duct structure, intake duct main part, air flue throat 5 and 4 integrated into one piece of air duct pipe.

In this embodiment, intake duct main part, air flue throat 5 and air duct pipe 4 integrated casting shaping, and cast simultaneously with air flue seat circle 6 and cylinder cap 7 and form, the applicability is strong and need not to increase special spare part, does not have the influence to the manufacturing of internal-combustion engine.

The utility model also provides an engine has used foretell intake duct structure.

The utility model also provides an automobile has used foretell intake duct structure.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an intake duct structure, includes the intake duct main part, the lower extreme of intake duct main part is equipped with the air flue throat, be equipped with air flue pipe in the intake duct main part, a serial communication port, the longitudinal section of intake duct main part possesses on the air flue along the line and the air flue down along the line, the air flue down along the line includes lower hypomere along the line and the upper segment along the line down that connect gradually from bottom to top, on the air flue along the line with the upper segment along the line is the segmental arc down, just the segmental arc on the air flue along the line all reduces from last to the arc camber down gradually.

2. The air intake duct structure of claim 1, wherein a tangent to the inlet end at the upper portion along the lower line intersects the air path along the upper line between the air path duct and the throat of the air path.

3. The air intake duct structure of claim 1, wherein the centers of the arcs of the upper sections of the upper line and the lower line of the air duct are both located below the main air intake duct body.

4. The air intake duct structure of claim 1, wherein the lower section of the lower line is a straight line section and is smoothly transitioned with the upper section of the lower line.

5. The air intake structure of claim 1, wherein the air intake body, the throat and the air conduit are integrally formed.

6. An engine characterized by comprising an intake passage structure according to any one of claims 1 to 5.

7. An automobile, characterized by comprising an air intake duct structure according to any one of claims 1 to 5.