CN214464601U

CN214464601U - Improved air inlet channel of diesel internal combustion engine

Info

Publication number: CN214464601U
Application number: CN202120150624.7U
Authority: CN
Inventors: 高安
Original assignee: Jiangsu Zhongfu Power Industrial Chain Co ltd
Current assignee: Jiangsu Zhongfu Power Industrial Chain Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-10-22
Anticipated expiration: 2031-01-19

Abstract

The utility model relates to an improvement type diesel internal combustion engine's intake duct, include: air inlet channel, valve guide boss and intake duct laryngeal opening, air inlet channel one end is separated into tangential air flow channel and spiral air flow channel through the valve guide boss, the air inlet channel other end is by big to little setting to valve guide boss direction from the air inlet, tangential air flow channel and spiral air flow channel pass through the changeover portion and connect the intake duct laryngeal opening. The utility model discloses the setting of changeover portion reduces the resistance that the air current got into the intake duct throat, and the flow property of reinforcing air current at the intake duct throat guarantees air input and vortex ratio in the cylinder combustion chamber, improves internal-combustion engine power, and the fuel consumption is reduced reduces and discharges, accords with energy saving and emission reduction requirement.

Description

Improved air inlet channel of diesel internal combustion engine

Technical Field

The utility model relates to an admission line especially relates to an improvement type diesel internal-combustion engine's intake duct.

Background

Direct injection diesel engines have good economy and startability, and direct injection of diesel engines has become a general trend in the development of diesel engines in recent years. In diesel engines, the quantity of air entering the cylinder and the velocity distribution of the gas, as well as its turbulence and turbulence conditions, significantly affect the combustion process, and thus its economy, dynamics and emissions. The structure of the air inlet channel directly influences the size of the fresh air charge in the cylinder of the internal combustion engine and the intensity of the intake air vortex, and is related to the charge coefficient and the formation of the mixture. When air flow enters a combustion chamber of a cylinder, the existing air inlet channel has small air flow, and the combustion efficiency of the internal combustion engine is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an improvement type diesel internal-combustion engine's intake duct.

The utility model provides a technical scheme that its technical problem adopted is: an improved intake port for a diesel internal combustion engine, comprising: air inlet channel, valve guide boss and intake duct laryngeal opening, air inlet channel one end is separated into tangential air flow channel and spiral air flow channel through the valve guide boss, the air inlet channel other end is by big to little setting to valve guide boss direction from the air inlet, tangential air flow channel and spiral air flow channel pass through the changeover portion and connect the intake duct laryngeal opening.

The utility model discloses an embodiment, the changeover portion is big end down's structure, the top and the intake duct throat size of changeover portion equal, the changeover portion bottom is greater than the intake duct throat.

In an embodiment of the present invention, the air inlet is provided with a filter screen.

In an embodiment of the present invention, the filter screen is V-shaped, and the V-shaped opening faces one end of the air inlet.

In an embodiment of the present invention, the air inlet is horizontally connected to the air inlet channel.

The utility model has the advantages that: the utility model discloses the setting of changeover portion reduces the resistance that the air current got into the intake duct throat, and the flow property of reinforcing air current at the intake duct throat guarantees air input and vortex ratio in the cylinder combustion chamber, improves internal-combustion engine power, and the fuel consumption is reduced reduces and discharges, accords with energy saving and emission reduction requirement.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the filter screen structure of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

An improved intake port for a diesel internal combustion engine as shown in fig. 1 comprises: air inlet channel 1, valve guide boss 2 and intake duct throat 3, air inlet channel 1 one end is passed through valve guide boss 2 and is separated into tangential air flow channel 4 and spiral air flow channel 5, the 1 other end of air inlet channel is set up by the size from air inlet 6 to valve guide boss 2 direction, tangential air flow channel 4 and spiral air flow channel 5 pass through changeover portion 7 and connect intake duct throat 3.

During air inlet, airflow enters from the air inlet 6, is divided through the air inlet channel 1 and then enters the tangential airflow channel 4 and the spiral airflow channel 5 respectively, and two different airflows are finally combined into one at the throat 3 of the air inlet channel to form mixed airflow which simultaneously has spiral airflow and tangential airflow and then flows into the combustion chamber of the air cylinder. Because the tangential airflow channel 4 and the spiral airflow channel 5 are connected with the throat 3 of the air inlet channel through the transition section 7, the flow performance of the throat of the air inlet channel is enhanced. Specifically, the changeover portion is big end down's structure, the top and the intake duct throat size of changeover portion equal, the changeover portion bottom is greater than the intake duct throat, and the structure setting of changeover portion guarantees that tangential air current and helical flow can get into intake duct throat 3 smoothly, reduces the resistance that the air current got into intake duct throat 3, guarantees air input and vortex ratio in the cylinder combustion chamber, improves internal-combustion engine power, reduces the oil consumption, reduces the emission, accords with energy saving and emission reduction requirement.

As shown in fig. 2, a filter screen is arranged at the air inlet, so that the air flow entering the inlet channel 1 can be further filtered, the content of impurities and particles in the air flow can be further reduced, the combustion power of the internal combustion engine can be improved, and the oil consumption can be reduced.

The filter screen is V-shaped, the V-shaped opening faces one end of the air inlet, namely, the air flow enters the air inlet channel from the opening of the V-shaped filter screen, and the air inlet quantity of the air inlet 6 is the largest, so that the filter screen is arranged at the position, and the air flow is not influenced too much; the airflow enters the air inlet channel in a layered mode under the action of the V-shaped filter screen, the cleanliness of the airflow is further improved through the filter screen, and the combustion efficiency of the internal combustion engine is improved; the air inlet 6 is horizontally connected with the air inlet channel 1, so that the air inflow and the air inlet speed of the air flow are ensured.

The utility model discloses the setting of changeover portion reduces the resistance that the air current got into the intake duct throat, and the flow property of reinforcing air current at the intake duct throat guarantees air input and vortex ratio in the cylinder combustion chamber, improves internal-combustion engine power, and the fuel consumption is reduced reduces and discharges, accords with energy saving and emission reduction requirement.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. An improved air intake duct for a diesel internal combustion engine, comprising: air inlet channel, valve guide boss and intake duct laryngeal opening, air inlet channel one end is separated into tangential air flow channel and spiral air flow channel through the valve guide boss, the air inlet channel other end is by big to little setting to valve guide boss direction from the air inlet, tangential air flow channel and spiral air flow channel pass through the changeover portion and connect the intake duct laryngeal opening.

2. The improved diesel engine intake duct of claim 1, wherein the transition section is a structure with a small top and a large bottom, the top end of the transition section is equal to the throat of the intake duct, and the bottom end of the transition section is larger than the throat of the intake duct.

3. The improved inlet duct of a diesel internal combustion engine as set forth in claim 1, wherein a filter screen is provided at the inlet.

4. The improved inlet duct of an internal combustion diesel engine as set forth in claim 3, wherein the filter screen is V-shaped and the V-shaped opening faces one end of the inlet.

5. An improved inlet duct for a diesel internal combustion engine as set forth in claim 1, wherein said inlet port is horizontally connected to said inlet passage.