Exhaust and heat insulation structure for automobile

Abstract

The utility model provides an exhaust heat insulation structure for an automobile, which comprises an exhaust manifold, an engine interface, a hot end heat insulation structure, an exhaust pipe, a three-way catalyst, a pipeline heat insulation structure and an exhaust funnel, and is characterized in that one end of the exhaust manifold is fixedly provided with the engine interface and is connected with an engine through the engine interface; the hot end heat insulation structure is fixedly installed on the outer side of the air outlet manifold, the exhaust pipe is fixedly installed at one end of the air outlet manifold, and the three-way catalyst is installed in the exhaust pipe. The pipeline heat insulation structure is fixedly installed on the outer side of the exhaust pipe, and the exhaust barrel is fixedly installed at one end of the exhaust pipe. Due to the arrangement of the hot end heat insulation structure and the pipeline heat insulation structure, heat exchange with the outside can be effectively isolated, the heat insulation capacity is high, and other structures cannot be affected by high temperature.

Description

Technical Field

[0001] This utility model relates to the field of automotive exhaust technology, and in particular to an exhaust heat insulation structure for automobiles. Background Technology

[0002] With the continuous development of the automotive industry, environmental regulations are becoming increasingly stringent regarding vehicle emissions. Especially in emission control, effectively reducing harmful gases in vehicle emissions has become a crucial issue in automotive design. As a vital component of a vehicle, the exhaust system is responsible for safely discharging exhaust gases from the engine into the environment. However, the exhaust gases reach extremely high temperatures during emission, easily causing thermal damage to the exhaust pipes and surrounding components; therefore, thermal management of the exhaust system is of paramount importance.

[0003] To ensure the long-term stability of the exhaust system and reduce environmental pollution from exhaust gases, the exhaust system needs to employ effective heat insulation measures to reduce heat transfer and ensure that the engine and other components of the exhaust system operate within a suitable temperature range. Currently, many traditional automotive exhaust systems do not pay enough attention to thermal management during design, resulting in excessively high exhaust pipe temperatures. This affects the system's lifespan and may adversely impact other vehicle components, such as material aging and performance degradation caused by high temperatures.

[0004] Therefore, it is essential to invent a heat insulation structure for automotive exhaust systems. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an exhaust heat insulation structure for automobiles, solving the issues that existing exhaust heat insulation structures still suffer from ineffective heat exchange with the outside environment, poor heat insulation capacity, and the tendency for high temperatures to affect other structures. An exhaust heat insulation structure for automobiles includes an exhaust manifold, an engine interface, a hot-end heat insulation structure, an exhaust pipe, a three-way catalytic converter, a pipe heat insulation structure, and an exhaust stack. Specifically: an engine interface is fixedly installed at one end of the exhaust manifold and connected to the engine via the engine interface; the hot-end heat insulation structure is fixedly installed on the outside of the exhaust manifold, and the exhaust pipe is fixedly installed at one end of the exhaust manifold; the three-way catalytic converter is installed inside the exhaust pipe; the pipe heat insulation structure is fixedly installed on the outside of the exhaust pipe, and the exhaust stack is fixedly installed at one end of the exhaust pipe.

[0006] The hot-end insulation structure includes a fixed outer shell, a mating outer shell, insulation filler, connecting bolts, and an extended protective plate. The fixed outer shell is fixedly installed on the outside of the exhaust manifold, and the mating outer shell is fixedly installed on the fixed outer shell by connecting bolts. The insulation filler is fixedly installed inside the fixed outer shell and the mating outer shell, and the insulation filler wraps around the outside of the exhaust manifold. The extended protective plate is fixedly installed on the outside of the fixed outer shell and the mating outer shell.

[0007] The pipe insulation structure includes an insulated pipe, a bottom protective armor, a vehicle body heat insulation plate, a buffer slot, a connecting frame, and a vehicle body connecting frame. The insulated pipe is wrapped around the outside of the exhaust pipe. The bottom protective armor and the vehicle body heat insulation plate are connected together by the connecting frame and clamped to the outside of the insulated pipe. The bottom protective armor and the vehicle body heat insulation plate have buffer slots inside. The vehicle body heat insulation plate is fixedly installed inside the vehicle body by the vehicle body connecting frame.

[0008] The fixed outer shell and the docking outer shell inside the hot end insulation structure are a pair of stainless steel metal shells. The fixed outer shell is connected to the outside of the exhaust manifold by connecting bolts. There is a space between the fixed outer shell and the docking outer shell. The space between the fixed outer shell and the docking outer shell is filled with heat insulation, and the overall thickness of the heat insulation is 30 cm. The heat insulation is divided into two parts. The interior of the heat insulation is provided with a groove to accommodate the exhaust manifold.

[0009] The internal insulation pipe of the pipe insulation structure adopts a tubular insulation structure, and the bottom protective armor and the vehicle body insulation plate are both made of metal plates. The bottom protective armor and the vehicle body insulation plate can generate elasticity through buffer slots. The entire pipe insulation structure is connected and installed to the vehicle chassis through the vehicle body connecting frame.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The hot-end heat insulation structure of this utility model has the following functions: ① Heat isolation: By installing the hot-end heat insulation structure on the outside of the exhaust manifold, the heat of the high-temperature exhaust gas is effectively isolated, preventing the heat from being transferred to the surrounding components and protecting the components around the engine from high-temperature damage.

[0012] ② Improve thermal efficiency: By insulating the exhaust system, the heat is maintained, and the operating temperature of the exhaust pipe and three-way catalytic converter is increased, thereby improving catalytic efficiency and reducing emissions; ③ Save energy and reduce consumption: By increasing the exhaust temperature and catalytic efficiency, the vehicle can reduce energy waste to a certain extent and improve overall fuel economy.

[0013] 2. The pipe insulation structure of this utility model has the following functions: ① Heat isolation and protection:

[0014] By wrapping the exhaust pipe with heat-insulating pipes and using bottom protective armor and vehicle body heat insulation plates, the high temperature generated by the exhaust pipe can be effectively isolated, preventing heat from affecting the vehicle body and other components susceptible to high-temperature damage; ② Improve system safety: The pipe heat insulation structure can effectively prevent the risk of fire caused by overheating of the exhaust pipe, especially at the contact point between the exhaust pipe and the vehicle chassis; ③ Optimize exhaust efficiency: The heat insulation layer can keep the exhaust pipe within an appropriate temperature range, which helps to improve the efficiency of exhaust gas flow and further improves the working efficiency and emission control effect of key components such as the three-way catalytic converter.

[0015] 3. The hot-end heat insulation structure of this utility model, through the synergistic effect of the hot-end heat insulation structure and the pipe heat insulation structure, can effectively isolate the high temperatures generated by the exhaust pipe and exhaust manifold, protecting the engine, vehicle body, and other components from heat damage. This structure not only improves the thermal efficiency of the exhaust system and optimizes the operating temperature of the three-way catalytic converter, reducing heat loss, but also extends the service life of the exhaust pipe, three-way catalytic converter, and vehicle body components. By reducing the impact of high temperatures on the vehicle body, it improves vehicle safety and fuel economy, while reducing exhaust emissions and meeting environmental protection requirements. Overall, this exhaust heat insulation structure plays an important role in improving vehicle performance, reducing maintenance costs, optimizing energy utilization, and protecting the environment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an enlarged view of section A of this utility model.

[0018] Figure 3 This is an enlarged view of section B of this utility model.

[0019] In the picture:

[0020] Exhaust manifold 1, engine interface 2, hot end heat insulation structure 3, fixed housing 31, docking housing 32, heat insulation filler 33, connecting bolt 34, extended protective plate 35, exhaust pipe 4, three-way catalytic converter 5, pipe heat insulation structure 6, heat insulation pipe 61, bottom protective armor 62, vehicle body heat insulation plate 63, buffer slot 64, connecting bracket 65, vehicle body connecting bracket 66, exhaust pipe 7. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] As attached Figure 1 To be continued Figure 3 As shown.

[0023] This utility model provides an exhaust heat insulation structure for automobiles, including an exhaust manifold 1, an engine interface 2, a hot-end heat insulation structure 3, an exhaust pipe 4, a three-way catalytic converter 5, a pipe heat insulation structure 6, and an exhaust stack 7. The exhaust manifold 1 has an engine interface 2 fixedly installed at one end, and is connected to the engine via the engine interface 2. The hot-end heat insulation structure 3 is fixedly installed on the outside of the exhaust manifold 1, and the exhaust pipe 4 is fixedly installed at one end of the exhaust manifold 1. The three-way catalytic converter 5 is installed inside the exhaust pipe 4. The pipe heat insulation structure 6 is fixedly installed on the outside of the exhaust pipe 4, and the exhaust stack 7 is fixedly installed at one end of the exhaust pipe 4.

[0024] The hot-end insulation structure 3 includes a fixed outer shell 31, a docking outer shell 32, an insulation filler 33, connecting bolts 34, and an extended protective plate 35. The fixed outer shell 31 is fixedly installed on the outside of the exhaust manifold 1, and the docking outer shell 32 is fixedly installed on the fixed outer shell 31 by connecting bolts 34. The insulation filler 33 is fixedly installed inside the fixed outer shell 31 and the docking outer shell 32, and the insulation filler 33 wraps around the outside of the exhaust manifold 1. The extended protective plate 35 is fixedly installed on the outside of the fixed outer shell 31 and the docking outer shell 32.

[0025] The pipe insulation structure 6 includes an insulated pipe 61, a bottom protective armor 62, a vehicle body heat insulation plate 63, a buffer slot 64, a connecting frame 65, and a vehicle body connecting frame 66. The insulated pipe 61 is wrapped around the outside of the exhaust pipe 4. The bottom protective armor 62 and the vehicle body heat insulation plate 63 are connected together by the connecting frame 65 and clamped to the outside of the insulated pipe 61. The bottom protective armor 62 and the vehicle body heat insulation plate 63 have buffer slots 64 inside. The vehicle body heat insulation plate 63 is fixedly installed inside the vehicle body by the vehicle body connecting frame 66.

[0026] The fixed outer shell 31 and the docking outer shell 32 inside the hot end insulation structure 3 are a pair of stainless steel metal shells. The fixed outer shell 31 is connected to the outside of the exhaust manifold 1 and to the docking outer shell 32 by connecting bolts 34. There is a space between the fixed outer shell 31 and the docking outer shell 32. The space between the fixed outer shell 31 and the docking outer shell 32 is provided with a heat insulation filler 33. The overall thickness of the heat insulation filler 33 is 30 cm. The heat insulation filler 33 is divided into two parts. The interior of the heat insulation filler 33 is provided with a groove to accommodate the exhaust manifold 1.

[0027] The heat insulation pipe 61 inside the pipe insulation structure 6 adopts a tubular heat insulation structure, and the bottom protective armor 62 and the vehicle body heat insulation plate 63 are both made of metal plates. The bottom protective armor 62 and the vehicle body heat insulation plate 63 can generate elasticity through the buffer slot 64. The entire pipe insulation structure 6 is connected and installed to the vehicle chassis through the vehicle body connecting frame 66.

[0028] The installation of this equipment involves connecting the exhaust manifold 1 to the engine via the engine interface 2, and then fixing the exhaust pipe 4 to the exhaust manifold 1. A hot-end insulation structure 3 is fixed to the outside of the exhaust manifold 1, and the fixing housing 31 is connected to the docking housing 32 via connecting bolts 34, ensuring effective heat insulation and enhancing protection through an extended protective plate 35. The pipe insulation structure 6 wraps the insulated pipe 61 around the outside of the exhaust pipe 4, and the bottom protective armor 62 is connected and fixed to the vehicle body heat insulation plate 63 via a connecting bracket 65. Finally, the entire structure is connected to the vehicle chassis via a vehicle body connecting bracket 66. After installation, inspection and debugging are required to ensure that all components are secure, leak-free, and that the system operates normally and emissions meet standards.

[0029] The internal structure of this equipment utilizes a combination of materials to ensure its high-temperature resistance, corrosion resistance, and excellent thermal insulation performance. Stainless steel is commonly used in key components of the exhaust manifold 1 and the hot-end insulation structure 3 due to its high-temperature and corrosion resistance. Aluminum alloy is suitable for components such as the exhaust pipe 4 and the body heat insulation panel 63, offering lightweight properties and good thermal conductivity. Ceramic and high-temperature composite materials are used for the insulation filler 33 and other insulation components, providing excellent thermal insulation. Steel is used for components such as the connecting frame 65 and the body connecting frame 66, providing strength and stability. Finally, a high-temperature resistant coating can be applied to the surfaces of exposed components to enhance heat resistance and oxidation resistance. This combined use of materials ensures the durability and stability of the equipment in high-temperature environments.

[0030] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A heat insulation structure for automotive exhaust systems, characterized in that: It includes an exhaust manifold (1), an engine interface (2), a hot-end heat insulation structure (3), an exhaust pipe (4), a three-way catalytic converter (5), a pipe heat insulation structure (6), and an exhaust stack (7), wherein: the engine interface (2) is fixedly installed at one end of the exhaust manifold (1) and is connected to the engine through the engine interface (2); the hot-end heat insulation structure (3) is fixedly installed on the outside of the exhaust manifold (1), and the exhaust pipe (4) is fixedly installed at one end of the exhaust manifold (1), and the three-way catalytic converter (5) is installed inside the exhaust pipe (4); the pipe heat insulation structure (6) is fixedly installed on the outside of the exhaust pipe (4), and the exhaust stack (7) is fixedly installed at one end of the exhaust pipe (4).

2. The automotive exhaust heat insulation structure as described in claim 1, characterized in that: The hot end insulation structure (3) includes a fixed outer shell (31), a docking outer shell (32), a heat insulation filler (33), connecting bolts (34), and an extension protective plate (35). The fixed outer shell (31) is fixedly installed on the outside of the exhaust manifold (1), and the docking outer shell (32) is fixedly installed on the fixed outer shell (31) by connecting bolts (34). The heat insulation filler (33) is fixedly installed inside the fixed outer shell (31) and the docking outer shell (32), and the heat insulation filler (33) wraps around the outside of the exhaust manifold (1). The extension protective plate (35) is fixedly installed on the outside of the fixed outer shell (31) and the docking outer shell (32).

3. The automotive exhaust heat insulation structure as described in claim 1, characterized in that: The pipe insulation structure (6) includes an insulation pipe (61), a bottom protective armor (62), a vehicle body heat insulation plate (63), a buffer slot (64), a connecting frame (65), and a vehicle body connecting frame (66). The insulation pipe (61) is wrapped around the outside of the exhaust pipe (4). The bottom protective armor (62) and the vehicle body heat insulation plate (63) are connected together by the connecting frame (65) and clamped on the outside of the insulation pipe (61). The bottom protective armor (62) and the vehicle body heat insulation plate (63) are provided with a buffer slot (64). The vehicle body heat insulation plate (63) is fixedly installed inside the vehicle body by the vehicle body connecting frame (66).

4. The automotive exhaust heat insulation structure as described in claim 2, characterized in that: The fixed outer shell (31) and the docking outer shell (32) inside the heat insulation structure (3) are a pair of stainless steel metal shells. The fixed outer shell (31) is connected to the outside of the exhaust manifold (1) and the docking outer shell (32) by connecting bolts (34). There is a space between the fixed outer shell (31) and the docking outer shell (32). The space between the fixed outer shell (31) and the docking outer shell (32) is provided with heat insulation filling (33), and the overall thickness of the heat insulation filling (33) is 30 cm. The heat insulation filling (33) is divided into two parts. The interior of the heat insulation filling (33) is provided with a groove to accommodate the exhaust manifold (1).

5. The automotive exhaust heat insulation structure as described in claim 3, characterized in that: The heat insulation pipe (61) inside the pipe insulation structure (6) adopts a tubular heat insulation structure, and the bottom protective armor (62) and the vehicle body heat insulation plate (63) are both made of metal plates. The bottom protective armor (62) and the vehicle body heat insulation plate (63) can generate elasticity through the buffer slot (64). The pipe insulation structure (6) is connected and installed to the vehicle chassis through the vehicle body connecting frame (66).

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