Turbocharging silencer of automobile engine

Abstract

The utility model belongs to the technical field of automobile engine turbocharging and silencing, and particularly relates to an automobile engine turbocharging and silencing device which comprises a barrel, and an expansion joint is fixedly installed on one side of the barrel. A heat dissipation mechanism is arranged at the top of the cylinder body, and a noise reduction mechanism is arranged in the cylinder body; the silencing mechanism comprises a primary silencing assembly and silencing cotton; wherein the primary silencing assembly comprises a shell and a connecting hole, a conical shell is fixedly mounted in the shell, and the connecting hole is used for communicating the conical shell with the silencing cavity. According to the silencer, the primary silencing assembly is installed in the cylinder body, the conical shells are arranged in the primary silencing assembly, and the silencing cavities are formed between the conical shells and the shells, so that the stroke of gas is greatly increased under the action of the conical shells and the silencing cavities, and therefore silencing is achieved; and secondary silencing can be realized, so that the use effect of the silencing device is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the automobile engine turbocharging silencing technical field, concretely relates to a kind of automobile engine turbocharging silencing device. BACKGROUND

[0002] For the automobile of being equipped with turbocharged engine, its exhaust system needs to be equipped with silencer to reduce the noise level when operating as a whole.The working principle of this silencer is similar to that of the silencer on other internal combustion engine vehicles, that is, by the design of internal structure to absorb or reflect sound wave energy, so as to achieve the effect of noise reduction.

[0003] Problems existing in the prior art:

[0004] The engine turbocharger will eject gas with certain pressure when working, and the existing silencing device will emit axial vibration when passing through the gas with pressure, thereby causing resonance with the vehicle and emitting noise, while the existing silencing device structure is relatively simple, so that the silencing effect of the gas ejected by the turbocharger is poor, so that the use effect of the silencing device is poor, and the gas ejected by the supercharger has certain temperature, which is easy to damage the silencing device. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of automobile engine turbocharging silencing device, can solve the problems of simple structure of existing silencing device, poor silencing effect, and resonance of silencer with vehicle caused by gas with pressure passing through silencing device, while the gas ejected by turbocharger carries certain temperature, which is easy to cause damage to silencing device.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A kind of automobile engine turbocharging silencing device, including cylinder, the one side of the cylinder is fixedly installed with expansion joint;

[0008] The top of the cylinder is provided with heat dissipation mechanism, and the inside of the cylinder is provided with silencing mechanism;

[0009] The silencing mechanism includes primary silencing component and silencing cotton;

[0010] Among them, the primary silencing component includes shell and connecting hole, the inside of the shell is fixedly installed with conical shell, and the connecting hole is used for the communication of conical shell and silencing cavity.

[0011] The primary silencing component is fixedly installed with the cylinder, and the top of the primary silencing component is integrally provided with strip-shaped shock-absorbing block, so that the top of the primary silencing component abuts against the inner wall of the cylinder.

[0012] The plurality of conical shells are connected head to tail.

[0013] The sound-absorbing cotton is arranged between the primary sound-absorbing assembly and the expansion joint, and the sound-absorbing cotton is fixedly installed with the cylinder.

[0014] The heat dissipation mechanism comprises a heat conduction cover, a damping pad and a heat conduction rod, the bottom of the heat conduction cover is fixedly provided with a mounting seat, and the top of the heat conduction cover is fixedly provided with heat dissipation fins.

[0015] A plurality of grooves are arranged around the inside of the heat conduction cover, and the damping pad is fixedly installed with the heat conduction cover through the grooves.

[0016] The two ends of the heat conduction rod are respectively abutted with the damping pad and the cylinder, a plurality of heat conduction rods are arranged around the top of the cylinder.

[0017] The technical effects achieved by the utility model are as follows:

[0018] The utility model discloses a primary sound-absorbing assembly is installed in the inside of the cylinder, a plurality of conical shells are arranged in the inside of the shell, and the gap between the conical shell and the shell forms a sound-absorbing cavity, and the sound-absorbing cavity is communicated with the conical shell through the connecting hole, so that when the gas enters the shell, it can stay in the inside of the conical shell and the sound-absorbing cavity, thereby effectively improving the sound-absorbing effect, and further improving the sound-absorbing effect under the action of the sound-absorbing cotton, so that the use effect of the sound-absorbing device can be effectively improved through the arrangement of the primary sound-absorbing assembly and the sound-absorbing cotton.

[0019] The utility model discloses an expansion joint is installed at the gas outlet end of the cylinder, the setting expansion joint can make the gas with pressure enter the sound-absorbing mechanism and carry out axial damping, and the strip-shaped damping block is installed at the top of the primary sound-absorbing assembly, and the damping pad is installed in the inside of the heat conduction cover, so that the sound-absorbing device can be further radially damped through the cooperation of the two, thereby improving the stability of the sound-absorbing device installation.

[0020] The utility model discloses a heat dissipation mechanism is arranged outside the cylinder, the heat dissipation fins are arranged around the top of the heat conduction cover, and the heat conduction cover is abutted with the outer surface of the cylinder through the heat conduction rod, so that when the gas with temperature passes through the cylinder, the heat is transferred to the heat dissipation fins through the heat conduction rod and the heat conduction cover, and the heat is dissipated through the heat dissipation fins, thereby avoiding the damage of the sound-absorbing device caused by long time high temperature and affecting the sound-absorbing effect. ACCURACY OF DRAWINGS

[0021] Figure 1 It is the overall installation structure perspective drawing of the utility model;

[0022] Figure 2 It is the shell structure analysis schematic view in the utility model;

[0023] Figure 3 is a structure analysis schematic view of a first sound attenuation assembly in the utility model;

[0024] Figure 4 is a structure schematic view of a heat dissipation mechanism.

[0025] In the drawings, the components represented by each reference numeral are listed as follows:

[0026] 1, cylinder; 2, heat dissipation mechanism; 21, heat conduction cover; 22, mounting seat; 23, heat dissipation fin; 24, shock pad; 25, heat conduction rod; 3, expansion joint; 4, sound attenuation mechanism; 41, first sound attenuation assembly; 411, shell; 412, conical shell; 413, sound attenuation cavity; 414, connecting hole; 42, sound attenuation cotton. DETAILED DESCRIPTION

[0027] In order to make the purpose and advantages of the utility model more clear and apparent, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the specific protection scope requested by the utility model.

[0028] As shown in Figures 1-4 , a turbocharged sound attenuation device for an automobile engine, comprising a cylinder 1, an expansion joint 3 is fixedly installed on one side of the cylinder 1;

[0029] A heat dissipation mechanism 2 is arranged at the top of the cylinder 1, and a sound attenuation mechanism 4 is arranged inside the cylinder 1;

[0030] The sound attenuation mechanism 4 comprises a first sound attenuation assembly 41 and sound attenuation cotton 42;

[0031] The first sound attenuation assembly 41 comprises a shell 411 and a connecting hole 414, the conical shell 412 is fixedly installed inside the shell 411, and the connecting hole 414 is used for the communication between the conical shell 412 and the sound attenuation cavity 413.

[0032] Referring to the accompanying Figure 2 and Figure 3 , in this embodiment, the first sound attenuation assembly 41 is fixedly installed with the cylinder 1, and a strip-shaped shock pad is integrally arranged at the top of the first sound attenuation assembly 41, so that the top of the first sound attenuation assembly 41 abuts against the inner wall of the cylinder 1.

[0033] In the above embodiment, since the first sound attenuation assembly 41 and the sound attenuation cotton 42 are installed inside the cylinder 1, the gas directly enters the inside of the first sound attenuation assembly 41 for first sound attenuation through the cylinder 1.

[0034] Further, since the plurality of conical shells 412 are arranged in the shell 411, and the plurality of conical shells 412 are connected end to end, the gas passes through the plurality of conical shells 412 in the shell 411, so that the sound is attenuated.

[0035] Further, the connecting holes 414 are arranged between the conical shells 412 and the sound attenuation cavities 413, so that the gas can enter the sound attenuation cavities 413, thereby increasing the travel of the gas, and improving the sound attenuation effect.

[0036] It is worth noting that the sound attenuation cotton 42 is arranged between the first sound attenuation assembly 41 and the expansion joint 3, and the sound attenuation cotton 42 is fixedly arranged on the cylinder 1, so that the second sound attenuation can be realized by the sound attenuation cotton 42, thereby realizing twice sound attenuation together with the first sound attenuation assembly 41, and the sound attenuation effect of the turbocharger is better.

[0037] Referring to the accompanying drawings Figure 1 and Figure 4 In the embodiment, the heat dissipation mechanism 2 comprises a heat conduction cover 21, a damping pad 24 and a heat conduction rod 25, the bottom of the heat conduction cover 21 is fixedly provided with a mounting seat 22, and the top of the heat conduction cover 21 is fixedly provided with a heat dissipation fin 23.

[0038] In the above embodiment, the mounting seat 22 arranged at the bottom of the heat conduction cover 21 enables the sound attenuation device to be conveniently mounted on the automobile, and the connecting flange arranged at the gas inlet end of the cylinder 1 enables the sound attenuation device to be conveniently mounted on the engine turbocharger.

[0039] Specifically, a plurality of grooves are arranged around the inside of the heat conduction cover 21, the damping pad 24 is fixedly arranged in the grooves, the two ends of the heat conduction rod 25 are respectively abutted with the damping pad 24 and the cylinder 1, and the heat conduction rod 25 is provided with a plurality of heat conduction rods and arranged around the top of the cylinder 1, so that the temperature on the surface of the cylinder 1 is transmitted to the heat conduction cover 21 through the heat conduction rod 25, and the heat is dissipated under the action of the heat dissipation fin 23, thereby preventing damage to the sound attenuation device.

[0040] The working principle of the utility model is as follows: after the sound attenuation device is mounted and fixed on the automobile by using the bolt passing through the mounting seat 22, the connecting flange arranged at one end of the cylinder 1 is used to connect the cylinder 1 with the gas outlet of the turbocharger, the other end of the cylinder 1 is connected with the exhaust pipe through the expansion joint 3, and the installation is completed, and the sound attenuation device can be used.

[0041] When used, the gas with temperature enters into the inside of the shell 411 through the cylinder 1, enters into the inside of the conical shell 412 through the shell 411 firstly, and the gas entering into the conical shell 412 enters into the inside of the sound attenuation cavity 413 under the action of the connecting hole 414, thereby greatly increasing the travel of the gas through the shell 411, so as to achieve the sound attenuation effect, and the gas after once sound attenuation will be secondarily sound attenuated when passing through the sound attenuation cotton 42, thereby achieving the purpose of turbocharger sound attenuation.

[0042] When the gas cylinder 1 passes through the sound attenuation structure, the gas carries pressure and temperature, and the carried pressure will cause radial and axial vibration when passing through the sound attenuation device, and the axial and radial damping is realized under the action of the expansion joint 3, the strip-shaped damping block on the top of the primary sound attenuation assembly 41 and the damping pad 24, thereby avoiding resonance between the sound attenuation device and the automobile to generate noise, and the temperature carried by the gas can be transferred to the heat conduction cover 21 under the action of the heat conduction rod 25, and the heat is dissipated under the action of the heat dissipation fin 23, thereby preventing the sound attenuation device from being damaged.

[0043] The above is only the preferred embodiment of the present application, and it should be pointed out that for the ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A turbo-supercharging muffling device for an automobile engine, characterized by comprising: Include: The barrel (1), one side of the barrel (1) is fixedly installed with expansion joint (3); The top of the barrel (1) is provided with heat dissipation mechanism (2), the inside of the barrel (1) is provided with silencing mechanism (4); The silencing mechanism (4) includes primary silencing assembly (41) and silencing cotton (42); Wherein, the primary silencing assembly (41) includes shell (411) and connecting hole (414), the inside of the shell (411) is fixedly installed with conical shell (412), the connecting hole (414) is used for conical shell (412) and silencing cavity (413) communication.

2. A turbo-supercharging silencer for an automobile engine according to claim 1, wherein: The primary silencing assembly (41) is fixedly installed with the barrel (1), the top of the primary silencing assembly (41) is integrally provided with strip shock pad, so that the top of the primary silencing assembly (41) is abutted with the inner wall of the barrel (1).

3. The turbo-supercharging silencer for an automobile engine according to claim 1, wherein: The conical shell (412) is arranged in horizontal direction, multiple conical shells (412) are connected head to tail.

4. The turbo-supercharging silencer for an automobile engine according to claim 1, wherein: The silencing cotton (42) is arranged between the primary silencing assembly (41) and the expansion joint (3), and the silencing cotton (42) is fixedly installed with the barrel (1).

5. The turbo-supercharging silencer for an automobile engine according to claim 1, wherein: The heat dissipation mechanism (2) includes heat conduction cover (21), shock pad (24) and heat conduction rod (25), the bottom of the heat conduction cover (21) is fixedly installed with mounting seat (22), the top of the heat conduction cover (21) is fixedly installed with heat dissipation fin (23).

6. A turbo-supercharging silencer for an automotive engine according to claim 5, characterized in that: The inside of the heat conduction cover (21) is surrounded by multiple grooves, the shock pad (24) is fixedly installed with the heat conduction cover (21) through the groove.

7. A turbo-supercharging silencer for an automotive engine according to claim 5, wherein: The both ends of the heat conduction rod (25) are respectively abutted with the shock pad (24) and the barrel (1), the heat conduction rod (25) is provided with multiple, and is arranged around the top of the barrel (1).

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