CN212508601U

CN212508601U - Engine supercharging air inlet connecting pipe, engine supercharging air inlet system and automobile

Info

Publication number: CN212508601U
Application number: CN202021854087.6U
Authority: CN
Inventors: 夏世东; 姚军; 王金福
Original assignee: FAW Volkswagen Automotive Co Ltd
Current assignee: FAW Volkswagen Automotive Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-02-09
Anticipated expiration: 2030-08-31

Abstract

The utility model provides an engine pressure boost air intake connection pipe, engine pressure boost air intake system and car. The two ends of the engine supercharging air inlet connecting pipe are respectively provided with an air inlet and an air outlet, and the engine supercharging air inlet connecting pipe comprises a first corrugated pipe section, a second corrugated pipe section, a first hard connecting pipe section and a second hard connecting pipe section; the first corrugated pipe section is close to the air inlet, the first corrugated pipe section is connected with the second corrugated pipe section through a first hard connecting pipe section, and the second corrugated pipe section is connected with the air outlet through a second hard connecting pipe section; the first hard connecting pipe section is bent and twisted, so that the central axes of the first corrugated pipe section and the second corrugated pipe section are not collinear and are not parallel; the lengths of the first corrugated pipe section and the second corrugated pipe section are different, and the corrugated rigidity of the first corrugated pipe section and the second corrugated pipe section is 12N/mm-14N/mm. The utility model discloses a pressure boost air inlet connection pipe makes its shock attenuation requirement when can satisfying to be connected with the engine through design such as special shape, structure and rigidity, can realize reducing supercharged engine's high frequency radiation noise that admits air again.

Description

Engine supercharging air inlet connecting pipe, engine supercharging air inlet system and automobile

Technical Field

The utility model relates to an engine technical field, concretely relates to engine pressure boost air intake connection pipe, engine pressure boost air intake system and car.

Background

At present, a turbocharged engine with a Miller cycle function is widely applied, and a supercharged air inlet connecting pipe of the turbocharged engine needs to bear larger tests. The rigidity cannot be too high in consideration of the requirement of vibration damping, but the softer air inlet connecting pipe can bring vortex sound of engine air inlet at medium-high frequency. When the supercharged engine is in full-load operation, the supercharged air inlet connecting pipe easily radiates high-frequency airflow noise due to high air inlet pressure, so that complaints of users are caused. Based on the challenge, the utility model discloses the author has obtained through long-time research and practice eventually the utility model discloses, it can satisfy the requirement of connecting the hardness, also brings less radiation noise simultaneously.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an engine pressure boost air inlet connection pipe, engine pressure boost air intake system and car.

The utility model discloses a technical scheme lie in:

on one hand, the utility model provides an engine supercharging air inlet connecting pipe, the two ends of which are respectively an air inlet and an air outlet, and the engine supercharging air inlet connecting pipe comprises a first corrugated pipe section, a second corrugated pipe section, a first hard connecting pipe section and a second hard connecting pipe section;

the first corrugated pipe section is close to the air inlet, the first corrugated pipe section is connected with the second corrugated pipe section through a first hard connecting pipe section, and the second corrugated pipe section is connected with the air outlet through a second hard connecting pipe section;

the first hard connecting pipe section is bent and twisted, so that the central axes of the first corrugated pipe section and the second corrugated pipe section are not collinear and are not parallel;

the lengths of the first corrugated pipe section and the second corrugated pipe section are different, and the corrugated rigidity of the first corrugated pipe section and the second corrugated pipe section is 12N/mm-14N/mm.

Further, the lengths of the first corrugated pipe section and the second corrugated pipe section are respectively 100mm, 20mm or 20mm, 100 mm; the number of the ripples is determined according to the envelope range of the engine shake under the driving working condition.

Further, the first corrugated pipe section and the second corrugated pipe section have the corrugated rigidity of 13N/mm.

Further, the length of the first hard-wired pipe segment is greater than the length of the second hard-wired pipe segment.

Further, it is manufactured using a blow molding process.

On the other hand, the utility model provides an engine pressure boost air intake system, strain including engine air inlet, sky, its characterized in that, engine air inlet, empty are strained between and are connected through foretell pressure boost air inlet connection pipe.

Further, the device is used for a turbocharged engine with a Miller cycle function.

In another aspect, the present invention provides an automobile, which includes the above-mentioned engine supercharging air intake system.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a pressure boost air inlet connection pipe makes its shock attenuation requirement when can satisfying being connected with the engine through design such as special shape, structure and rigidity, can realize reducing supercharged engine's high frequency radiation noise that admits air again. Especially, the utility model discloses a pressure boost air inlet connection pipe can eliminate 4 jar supercharged engine's air intake system and surpass 2000 produced high frequency air current noises more than changeing.

Drawings

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

Fig. 1 shows a schematic structural view of an engine supercharging inlet connection pipe according to an embodiment of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 shows the actual measurement contrast diagram of the radiation noise before and after the application of the supercharged air-intake connecting pipe of the engine of the embodiment of the present invention.

Detailed Description

The above and further features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention, and 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "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, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 and 2, in this embodiment, the utility model discloses an engine pressure boost air inlet connection pipe, its both ends are air inlet 20, gas outlet 10 respectively, and the air inlet at the engine is connected to gas outlet 10, and air inlet 20 is connected on the air filter that admits air, and the order of flowing through of air current is: automobile front grille air inlet → flow guiding piece → air filter → engine supercharging air inlet connecting pipe → engine air inlet.

The engine supercharging air inlet connecting pipe comprises a first corrugated pipe section 1, a second corrugated pipe section 3, a first hard connecting pipe section 2 and a second hard connecting pipe section 4. The first bellows section 1 is close to the air inlet 20, the first bellows section 1 and the second bellows section 3 are connected through a first hard connecting pipe section 2, and the second bellows section 3 and the air outlet 10 are connected through a second hard connecting pipe section 4. In the air inlet process of the engine, vibration and noise of the engine are attenuated when the engine passes through the first bellows section 1, so that air continues to be fed after the engine passes through the first hard connecting pipe section 2, the vibration and noise of the engine pass through the second bellows section 3 again, and finally the engine enters the engine for combustion after the vibration and noise of the engine pass through the second hard connecting pipe section 4.

The first hard connecting pipe section 2 is bent and twisted so that the central axes of the first corrugated pipe section 1 and the second corrugated pipe section 3 are not collinear and parallel. The first bellows section 1 and the second bellows section 3 have different lengths. And determining the required deformation amount according to the envelope range of the engine vibration under the driving condition, and designing the length of the corrugated pipe according to the deformation amount. The utility model discloses connect by two sections bellows and two sections hard connecting pipes and constitute, wherein the bellows of two sections different length can take place great pulling pressure deformation and certain bending deformation in the axial, plays isolated engine vibration's effect. The two sections of corrugated pipes are designed in different directions and are connected by hard pipes, so that the radiation noise is further attenuated.

The corrugated rigidity of the first corrugated pipe section 1 and the second corrugated pipe section 3 is 12N/mm-14N/mm. The corrugated pipe has overlarge corrugated rigidity and is easy to break, and the corrugated pipe has undersized corrugated rigidity and is easy to radiate noise outwards. The corrugated rigidity of the supercharged air inlet connecting pipe is 12N/mm-14N/mm through repeated calculation and test, so that the structural radiation noise of the supercharged air inlet connecting pipe can be effectively reduced, and meanwhile, the damping requirement of the air inlet connecting pipe can be met.

Preferably, the first bellows section 1 and the second bellows section 3 both have a corrugation stiffness of 13N/mm. The lengths of the first bellows sections are 100mm and the length of the second bellows sections is 20mm, respectively. Alternatively, the lengths of the first bellows sections are 20mm and the lengths of the second bellows sections are 100mm, respectively. And then the number of the ripples is designed according to the envelope range of the engine shake under the driving working condition, and the number of the ripples is not too large in order to reduce the radiation noise of the connecting pipe as much as possible. Then, the pipe wall thickness at the corrugation position is designed and the material property is selected according to the corrugation rigidity required by noise reduction. Finally, the two sections of corrugated pipes are connected into a whole of the supercharging air inlet pipe by a hard connecting pipe. The effect is best, and the structure radiation noise of the supercharging air inlet connecting pipe is reduced to the lowest on the premise of meeting the damping requirement.

The length of the first hard connection pipe section 2 is larger than that of the second hard connection pipe section 4, the distance between the first corrugated pipe section 1 and the second corrugated pipe section 3 is prolonged as much as possible in a limited space, and the attenuation of radiation noise is further enhanced by matching with the bending and twisting of the first hard connection pipe section 2.

Finally, the supercharging air inlet connecting pipe is manufactured by adopting a blow molding process. Of course, the manufacturing method may be other methods, and is not limited to the blow molding process.

Referring to fig. 3, fig. 3 shows a comparison graph of the radiation noise measured before and after the engine supercharging inlet connection pipe of the embodiment of the present invention is applied. Wherein, every little check of axis of ordinates represents 5dB, uses the utility model discloses an engine pressure boost admission connecting pipe can make the engine pressure boost admit air high frequency radiation noise (5000 supplyes 10000Hz) and reduce 5-10 dB. The driving experience of the user is greatly improved.

On the basis of above-mentioned engine pressure boost air inlet connection pipe, the utility model provides an engine pressure boost air inlet system, including engine air inlet, empty straining, install above-mentioned arbitrary technical scheme's pressure boost air inlet connection pipe between engine air inlet, the empty straining. It can be applied to any turbocharged engine with a Miller cycle.

Furthermore, the utility model also provides an automobile, this automobile adopts foretell engine pressure boost air intake system.

The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative, not limiting. The utility model discloses in all can change to some extent structure and connected mode etc. of each part all be in the utility model discloses equal transform and the improvement of going on technical scheme's the basis all should not get rid of the utility model discloses an outside the protection scope.

Claims

1. A supercharging air inlet connecting pipe of an engine is characterized by comprising a first corrugated pipe section, a second corrugated pipe section, a first hard connecting pipe section and a second hard connecting pipe section, wherein the two ends of the supercharging air inlet connecting pipe are respectively provided with an air inlet and an air outlet;

2. The engine supercharging intake connecting pipe according to claim 1, wherein the lengths of the first bellows section and the second bellows section are 100mm, 20mm or 20mm, 100mm, respectively; the number of the ripples is determined according to the envelope range of the engine shake under the driving working condition.

3. The engine boost intake connection of claim 1, wherein the first bellows section and the second bellows section each have a bellows stiffness of 13N/mm.

4. The engine boost intake connection of claim 1, wherein said first hard-wired segment has a length greater than a length of said second hard-wired segment.

5. The engine supercharging intake connection of claim 1, wherein it is manufactured by a blow molding process.

6. An engine supercharging air inlet system comprises an engine air inlet and an air filter, wherein the engine air inlet and the air filter are connected through a supercharging air inlet connecting pipe according to any one of claims 1 to 5.

7. An engine supercharging intake system according to claim 6, which is used in a turbocharged engine having a Miller cycle.

8. An automobile comprising the engine boost air intake system of claim 6 or 7.