CN105422242A - Engine, exhaust connecting pipe assembly of engine, and automobile - Google Patents

Abstract

The invention discloses an exhaust connecting pipe assembly, which comprises an exhaust connecting pipe body, an air inlet and an air outlet located at both ends of the exhaust connecting pipe body, and the front section of the exhaust connecting pipe body is arranged With exhaust bellows. The exhaust bellows is a section of flexible pipe that can isolate the vibration transmitted from the engine to the exhaust system, so as to prevent the vibration from being transmitted to the body and coincide with the natural frequency of the body to cause resonance. While isolating the vibration of the engine or powertrain, the exhaust bellows reduce the vibration amplitude of the front section of the exhaust system and avoid the generation of regenerative noise. The solution improves the stability and reliability of the exhaust system, prolongs the service life of the exhaust system, and thus improves the riding comfort. The present invention also provides an engine and an automobile comprising the above-mentioned exhaust connecting pipe assembly.

Description

An engine and its exhaust connecting pipe assembly and an automobile

technical field

The invention relates to the technical field of engines, in particular to an engine and its exhaust connecting pipe assembly and an automobile.

Background technique

The exhaust connecting pipe assembly is an important part of the automobile engine exhaust system. The exhaust connecting pipe assembly is between the engine and the front muffler, and is used to guide the exhaust gas discharged from the engine exhaust main pipe into the exhaust system. However, due to structural design defects, the existing exhaust connecting pipe assembly often produces vibration and noise during operation, which not only affects the stability of the exhaust system, shortens the service life of the exhaust connecting pipe, but also reduces the for ride comfort.

Therefore, how to improve the stability and ride comfort of the exhaust connecting pipe is a technical problem that those skilled in the art need to solve.

Contents of the invention

The first object of the present invention is to provide an exhaust connecting pipe assembly for improving the stability and ride comfort of the exhaust connecting pipe. The other two objectives of the present invention are to provide an engine and an automobile comprising the above-mentioned exhaust connecting pipe assembly.

An exhaust connecting pipe assembly, comprising an exhaust connecting pipe body and air inlets and air outlets located at both ends of the exhaust connecting pipe body, the front section of the exhaust connecting pipe body is provided with exhaust corrugations Tube.

Preferably, in the above-mentioned exhaust connecting pipe assembly, the air inlet is provided with a connecting pipe front end flange for connecting with the engine exhaust main pipe.

Preferably, in the above-mentioned exhaust connecting pipe assembly, the air outlet is provided with a rear end flange of the connecting pipe for connecting with the front muffler.

Preferably, in the above-mentioned exhaust connecting pipe assembly, the outer circumference of the exhaust connecting pipe body is further provided with a connecting pipe hanger.

Preferably, in the above-mentioned exhaust connecting pipe assembly, the outer periphery of the exhaust bellows is covered with a stainless steel mesh sleeve.

An engine, comprising the exhaust connecting pipe assembly described in any one of the above.

An automobile comprising the engine as described above.

The exhaust connecting pipe assembly provided by the present invention includes an exhaust connecting pipe body and air inlets and air outlets located at both ends of the exhaust connecting pipe body. The front section of the exhaust connecting pipe body is provided with exhaust Gas bellows. The exhaust bellows is a section of flexible pipe that can isolate the vibration transmitted from the engine to the exhaust system, so as to prevent the vibration from being transmitted to the body and coincide with the natural frequency of the body to cause resonance. While isolating the vibration of the engine or powertrain, the exhaust bellows reduce the vibration amplitude of the front section of the exhaust system and avoid the generation of regenerative noise. The solution improves the stability and reliability of the exhaust system, prolongs the service life of the exhaust system, and thus improves the riding comfort.

The present invention also provides an engine, comprising the above-mentioned exhaust connecting pipe assembly. The derivation process of the beneficial effect produced by the engine is generally similar to the derivation process of the beneficial effect brought by the above-mentioned exhaust connecting pipe assembly, so it will not be repeated here.

The present invention also provides an automobile, including the above-mentioned engine. The derivation process of the beneficial effects produced by the automobile is generally similar to the derivation process of the beneficial effects brought about by the above-mentioned exhaust connecting pipe assembly, so it will not be repeated here.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the front view of the structure of the exhaust connecting pipe assembly in the specific embodiment of the present invention;

Fig. 2 is a structural top view of the exhaust connecting pipe assembly in a specific embodiment of the present invention.

In Figure 1 and Figure 2:

1-exhaust connecting pipe body, 2-exhaust corrugated pipe, 3-connecting pipe front flange, 4-connecting pipe rear flange, 5-connecting pipe hanging buckle.

detailed description

The core of the present invention is to provide an exhaust connecting pipe assembly, which can improve the stability and ride comfort of the exhaust connecting pipe.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1 and Figure 2, Figure 1 is a front view of the structure of the exhaust connecting pipe assembly in a specific embodiment of the present invention, and Figure 2 is a top view of the structure of the exhaust connecting pipe assembly in a specific embodiment of the present invention.

In a specific embodiment, the present invention provides an exhaust connecting pipe assembly, which includes an exhaust connecting pipe body 1 and an air inlet and an air outlet located at both ends of the exhaust connecting pipe body 1. The front section of the connecting pipe body 1 is provided with an exhaust bellows 2 . It should be noted that the front section of the exhaust connecting pipe body 1 specifically refers to the pipe section at the end of the exhaust connecting pipe body 1 connected to the exhaust manifold of the engine, that is, the pipe section at the end near the air inlet in Fig. 1 and Fig. 2 .

The exhaust connecting pipe assembly is between the engine and the front muffler, and is used to guide the exhaust gas discharged from the exhaust manifold of the engine into the exhaust system. The exhaust gas discharged from the exhaust manifold of the engine enters the exhaust connection pipe body 1 from the air inlet, and first passes through the exhaust bellows 2, which is a flexible pipe that can isolate the air from the engine to the exhaust system. Vibration, so as to prevent the vibration from being transmitted to the body and coincide with the natural frequency of the body to cause resonance. While isolating the vibration of the engine or the powertrain, the exhaust bellows 2 reduces the vibration amplitude of the front section of the exhaust system and avoids the generation of regenerative noise. The solution improves the stability and reliability of the exhaust system, prolongs the service life of the exhaust system, and thus improves the riding comfort.

It should be noted that the air inlet is also provided with a connecting pipe front-end flange 3 for connecting with the engine exhaust manifold, the air outlet is provided with a connecting pipe rear-end flange 4 for connecting with the front muffler, and the connecting pipe front-end flange 3 and the flange 4 at the rear end of the connecting pipe not only play a connection role, but also have a sealing effect to prevent the exhaust gas from the engine from leaking and ensure the safe operation of the exhaust system.

It should be noted that, in order to facilitate the installation and fixing of the exhaust connecting pipe assembly, preferably, this solution is also provided with a connecting pipe hook 5 on the outer periphery of the exhaust connecting pipe body 1. When the exhaust connecting pipe body 1 is installed It can be fixed to the inside of the vehicle body through the connecting pipe hook 5, which is also beneficial to reduce the vibration of the exhaust connecting pipe assembly and improve the stability and reliability of the exhaust system.

Preferably, the outer circumference of the exhaust bellows 2 is also coated with a stainless steel mesh sleeve, which can not only improve the strength of the exhaust bellows 2, but also improve the noise reduction and vibration reduction effect of the exhaust bellows 2, and extend the life of the exhaust connecting pipe. service life.

The present invention also provides an engine, comprising the above-mentioned exhaust connecting pipe assembly. The derivation process of the beneficial effects produced by the engine is generally similar to the derivation process of the beneficial effects brought about by the above-mentioned exhaust connecting pipe assembly, so it will not be repeated here.

The present invention also provides an automobile, including the above-mentioned engine. The derivation process of the beneficial effects produced by the automobile is generally similar to the derivation process of the beneficial effects brought about by the above-mentioned exhaust connecting pipe assembly, so it will not be repeated here.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. an exhaust connection assembly, it is characterized in that, comprise exhaust connection body (1) and be positioned at suction port and the air outlet at described exhaust connection body (1) two ends, the leading portion of described exhaust connection body (1) is provided with exhaust expansion bellows (2).

2. exhaust connection assembly according to claim 1, is characterized in that, described suction port is provided with the connecting tube front end flange (3) for being connected with engine exhaust manifold.

3. exhaust connection assembly according to claim 1, is characterized in that, described air outlet is provided with end flange (4) after the connecting tube for being connected with premuffler.

4. exhaust connection assembly according to claim 1, is characterized in that, the periphery of described exhaust connection body (1) is also provided with connecting tube and buckles (5).

5. exhaust connection assembly according to claim 1, is characterized in that, the periphery of described exhaust expansion bellows (2) is coated with stainless steel net.

6. a motor, is characterized in that, comprises the exhaust connection assembly as described in any one of claim 1 to 5.

7. an automobile, is characterized in that, comprises motor as claimed in claim 6.