An automobile diesel engine intake pipe assembly

Abstract

The present invention relates to the field of automobile technology, specifically to an automobile diesel engine intake duct assembly, including a main intake duct, which is composed of a front connecting pipe and a terminal connecting pipe, an air filter is installed at the inlet end of the front connecting pipe, and a reversing valve is installed on the front connecting pipe. The automobile diesel engine intake duct assembly proposed by the present invention can heat the air by a heating device and then send it to the terminal connecting pipe, thereby ensuring the normal start of the diesel engine, and the heating efficiency is high during the heating process, and the waste heat recovery of the exhaust gas can be effectively realized. At the same time, it can also effectively reduce vibration and noise, so it can meet the use needs of the existing market, thereby solving the problem that the existing diesel engine intake duct has an unsatisfactory air heating effect during cold start and is prone to vibration and noise, and can effectively improve the cold start performance of the diesel engine under low temperature conditions.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, in particular to an air intake pipe assembly of an automobile diesel engine. Background Art

[0002] Automobile refers to a non-rail-mounted vehicle with four or more wheels that can be used to transport people and goods or perform special operations. Automobiles are mainly divided into fuel-powered vehicles, hybrid vehicles and pure electric vehicles according to their power sources. Among them, large heavy-duty vehicles for engineering operations are mainly powered by diesel engines.

[0003] However, diesel engines have difficulty starting at low temperatures, especially when the temperature is below -20 degrees Celsius. The success rate of cold starting of diesel engines will drop significantly, which will seriously delay the user's time. At present, the intake air can be preheated to improve the success rate of starting, but the structure of heating air in the intake pipe of the diesel engine is relatively simple. Due to the limitation of the size of the heating structure, it can only adapt to a small range of low temperature fluctuations, and it will generate large noise and vibration, which is difficult to meet the existing needs.

[0004] Therefore, we need an automobile diesel engine intake duct assembly to solve the problem that the existing diesel engine intake duct has poor air heating effect during cold start and is prone to vibration and noise, which can effectively improve the cold start performance of the diesel engine under low temperature conditions. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing diesel engine intake pipe has an unsatisfactory air heating effect during cold start and is prone to vibration and noise. The present application provides an automobile diesel engine intake pipe assembly, which is prone to vibration and noise and can effectively improve the cold start performance of the diesel engine under low temperature conditions.

[0006] To achieve the above object, the present invention provides the following technical solution: an automobile diesel engine intake pipe assembly, comprising:

[0007] A main air intake pipe, the main air intake pipe is composed of a front connecting pipe and a terminal connecting pipe, an air filter is installed at the inlet end of the front connecting pipe, and a reversing valve is installed on the front connecting pipe, an intake manifold connected to the cylinder of the diesel engine is installed at the output end of the terminal connecting pipe, and a throttle valve is installed on the terminal connecting pipe;

[0008] An installation device, the installation device comprising an insulating shell, and at least four installation holes for installing the heating device are opened in the insulating shell, a connecting end cover is fixedly installed at the end of the insulating shell, and the connecting end cover connects the installation holes in series through a connecting pipe to form a heating channel, the front end of the heating channel is connected to the reversing valve through an air inlet, and the rear end of the heating channel is connected to the terminal connecting pipe through an air outlet;

[0009] A sound insulation and shock absorption shell is fixedly installed on a vehicle frame, and the sound insulation and shock absorption shell fixes a mounting device in an inner cavity of the sound insulation and shock absorption shell through a first shock absorption seat and a second shock absorption seat.

[0010] Preferably, a first temperature sensor for detecting the air temperature in the mounting hole is fixedly mounted on the mounting device, and a second temperature sensor is fixedly mounted on the front connecting pipe, and the first temperature sensor, the second temperature sensor and the reversing valve are all electrically connected to the vehicle's on-board computer.

[0011] Preferably, a vacuum tube is fixedly installed on the soundproof and shock-absorbing shell for connecting to the inner cavity of the soundproof and shock-absorbing shell, so as to facilitate external vacuum equipment to vacuum the inner cavity of the soundproof and shock-absorbing shell, and a one-way closing valve is installed on the vacuum tube for only allowing gas to be extracted from the inner cavity of the soundproof and shock-absorbing shell. A pressure gauge for detecting the internal air pressure of the soundproof and shock-absorbing shell is fixedly installed on the soundproof and shock-absorbing shell.

[0012] Preferably, the air inlet is connected to the reversing valve via an air supply hose installed on the sound-proof and shock-absorbing shell, and the air outlet is connected to the terminal connecting pipe via an air exhaust hose installed on the sound-proof and shock-absorbing shell.

[0013] Preferably, the second shock absorbing seat is fixed at the upper and lower ends of the heat-insulating shell, and the second shock absorbing seat is formed by a combination of a spring and a rubber pad.

[0014] Preferably, the first shock absorbing seat is fixed to the side of the heat-insulating shell, and the first shock absorbing seat is formed by a combination of a spring and a rubber pad.

[0015] Preferably, the interior of the installation device is isolated by a heat storage guide plate to form an exhaust gas flow channel, and a heat conductive layer is installed between the installation hole and the exhaust gas flow channel, and an exhaust gas intake pipe and an exhaust gas exhaust pipe are respectively provided at the head and tail ends of the exhaust gas flow channel, and the exhaust gas intake pipe is connected to the exhaust gas filter, and the exhaust gas filter is connected to the exhaust pipe of the diesel engine on the car.

[0016] Preferably, an exhaust gas supply hose for connecting the exhaust gas intake pipe and the exhaust gas filter is fixedly installed on the sound insulation and shock absorption shell, and an exhaust gas exhaust hose for connecting the exhaust gas exhaust pipe and the external closing valve is fixedly installed on the sound insulation and shock absorption shell.

[0017] Preferably, the heating device includes a pair of end connecting frames fixedly mounted on the mounting holes, and a central heat-conducting sleeve is fixedly mounted between the end connecting frames, a heater is arranged in the central heat-conducting sleeve, and at least four microporous plates tightly fitted with the mounting holes are arranged in a linear array on the central heat-conducting sleeve, and at least a pair of oblique guide plates installed at an inclined angle relative to the axis of the central heat-conducting sleeve for guiding the air flow direction are arranged between adjacent microporous plates, and a heat-conducting column is installed between the central heat-conducting sleeve and the oblique guide plates.

[0018] Preferably, a mounting slot is provided on the end connecting frame, and an anti-rotation limiting protrusion slidably mounted with the mounting slot for preventing the heating device from shaking is provided in the mounting hole.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention proposes an automobile diesel engine intake duct assembly, which can utilize a heating device to heat the air before sending it into the terminal connecting pipe, thereby ensuring the normal starting of the diesel engine. In the heating process, the heating efficiency is high, and the waste heat recovery of the exhaust gas can be effectively realized. At the same time, vibration and noise can also be effectively reduced. Therefore, it can meet the use needs of the existing market, thereby solving the problem that the existing diesel engine intake pipe has an unsatisfactory air heating effect during cold start and is prone to vibration and noise, and can effectively improve the cold start performance of the diesel engine under low temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a side view of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the installation of the air intake pipe of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the sound insulation and shock absorption housing of the present invention;

[0025] Figure 5 A half-section schematic diagram of the sound insulation and vibration reduction housing and the installation device of the present invention when being installed;

[0026] Figure 6 It is a partial cutaway schematic diagram of the sound insulation and vibration reduction of the present invention;

[0027] Figure 7 It is a schematic diagram of the installation of the installation device and the connection end cover of the present invention;

[0028] Figure 8 It is a schematic diagram of the installation of the installation device and the heating device of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the heating device of the present invention;

[0030] Fig.10 It is a schematic cross-sectional view of the installation device of the present invention.

[0031] In the figure: 1. Intake manifold; 2. Mounting device; 201. Exhaust gas intake pipe; 202. Heat conducting layer; 203. Exhaust gas flow channel; 204. Heat storage guide plate; 205. Mounting hole; 206. Exhaust gas discharge pipe; 207. Insulation shell; 3. Heating device; 301. Central heat conducting sleeve; 302. Heat conducting column; 303. Microporous plate; 304. Oblique guide plate; 305. Mounting slide; 306. Heater; 307. End connecting frame; 4. Connecting end cover; 401. Air inlet; 402. Connecting pipe; 403. Air exhaust outlet; 5. main air intake pipe; 501. end connecting pipe; 502. front connecting pipe; 503. reversing valve; 6. one-way closing valve; 7. exhaust gas supply hose; 8. air supply hose; 9. air exhaust hose; 10. first temperature sensor; 11. anti-rotation limit protrusion; 12. throttle valve; 13. air filter; 14. second temperature sensor; 15. barometer; 16. exhaust gas exhaust hose; 17. vacuum tube; 18. exhaust gas filter; 19. first shock absorber seat; 20. second shock absorber seat; 21. sound insulation and shock absorption shell. DETAILED DESCRIPTION

[0032] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0036] For example, see Figures 1 to 10 The present invention provides a technical solution: an intake pipe assembly of an automobile diesel engine, comprising a main intake pipe 5, a mounting device 2 and a sound insulation and shock absorption housing 21, wherein the main intake pipe 5 is composed of a front end connecting pipe 502 and a terminal connecting pipe 501 connected to each other, an air filter 13 is installed at the inlet end of the front end connecting pipe 502, and a reversing valve 503 is installed on the front end connecting pipe 502, an intake manifold 1 connected to the cylinder of the diesel engine is installed at the output end of the terminal connecting pipe 501, and a throttle valve 12 is installed on the terminal connecting pipe 501, under normal conditions, air enters the air filter 13 for filtration, and then passes through the front end connecting pipe 502 and the terminal connecting pipe 501 in sequence and enters the intake manifold 1, and then the intake manifold 1 delivers the air into the cylinder of the diesel engine.

[0037] The mounting device 2 includes a heat-insulating shell 207, and at least four mounting holes 205 for mounting the heating device 3 are provided in the heat-insulating shell 207. A connecting end cover 4 is fixedly installed at the end of the heat-insulating shell 207, and the connecting end cover 4 connects the mounting holes 205 in series through a connecting pipe 402 to form a heating channel. The front end of the heating channel is connected to the reversing valve 503 through an air inlet 401, and the rear end of the heating channel is connected to the terminal connecting pipe 501 through an air outlet 403. A first temperature sensor 10 for detecting the temperature of the air in the mounting hole 205 is fixedly installed on the mounting device 2, and a second temperature sensor 14 is fixedly installed on the front connecting pipe 502. The first temperature sensor 10, the second temperature sensor 14 and the reversing valve 503 are all electrically connected to the vehicle's driving computer. When the first When the second temperature sensor 14 detects that the air temperature is lower than the preset value, the front connecting pipe 502 is connected to the air inlet 401 through the reversing valve 503, so that the air enters the heating channel, and the heating device 3 located in the heating channel will heat the air entering the heating channel, so that the air temperature rises to a temperature range that can meet the use of the diesel engine. Then, the heated air enters the terminal connecting pipe 501 through the air exhaust port 403, and then enters the cylinder of the diesel engine through the intake manifold 1. The first temperature sensor 10 can detect the temperature in the heating channel, thereby sending the temperature signal to the on-board computer, and then the on-board computer controls the working state of the heating device 3, thereby maintaining the air in the heating channel within a suitable temperature range.

[0038] The sound insulation and shock absorbing shell 21 is fixedly installed on the automobile frame, and the sound insulation and shock absorbing shell 21 fixes the installation device 2 in the inner cavity of the sound insulation and shock absorbing shell 21 through the first shock absorbing seat 19 and the second shock absorbing seat 20. The second shock absorbing seat 20 is fixed on the upper and lower ends of the heat insulation shell 207, and the second shock absorbing seat 20 is formed by a combination of springs and rubber pads. The first shock absorbing seat 19 is fixed on the side of the heat insulation shell 207, and the first shock absorbing seat 19 is formed by a combination of springs and rubber pads. The first shock absorbing seat 19 and the second shock absorbing seat 20 are both directly connected to the sound insulation and shock absorbing shell 21 and the installation device 2 by springs, and a rubber pad or rubber film is arranged on the outside of the spring to wrap the spring, so as to isolate and absorb the noise generated when the spring moves.

[0039] The interior of the installation device 2 is isolated by a heat storage guide plate 204 to form an exhaust gas flow channel 203, and a heat conductive layer 202 is installed between the installation hole 205 and the exhaust gas flow channel 203. The exhaust gas intake pipe 201 and the exhaust gas exhaust pipe 206 are respectively arranged at the head and tail ends of the exhaust gas flow channel 203, and the exhaust gas intake pipe 201 is connected to the exhaust gas filter 18, and the exhaust gas filter 18 is connected to the exhaust pipe of the diesel engine on the car. Part of the exhaust gas generated when the diesel engine is running will be sent into the exhaust gas flow channel 203, so that the heat of the exhaust gas in the exhaust gas flow channel 203 can be transferred to the air in the heating channel by the heat conductive layer 202 to realize heat recovery. On the other hand, the heat in the exhaust gas will also be recovered by the heat storage guide plate 204 absorbs heat to store heat. When the diesel engine needs to move intermittently, the heat storage guide plate 204 can store heat and transfer the stored heat to the air in the heating channel through the heat conductive layer 202. In this way, the air in the heating channel can be maintained at a relatively high temperature when the diesel engine needs to be started next time. In this way, when the air in the heating channel is heated by the heating device 3 again, less energy can be consumed, thereby achieving energy-saving effects. In addition, the special shape of the heat storage guide plate 204 can also enable the exhaust gas in the exhaust flow channel 203 to contact the heat conductive layer 202 with the maximum efficiency, thereby improving the efficiency of preheating transfer and improving the preheating recovery efficiency.

[0040] An exhaust gas supply hose 7 for connecting the exhaust gas intake pipe 201 and the exhaust gas filter 18 is fixedly installed on the sound insulation and shock absorbing shell 21, and an exhaust gas exhaust hose 16 for connecting the exhaust gas exhaust pipe 206 and the external closed valve is fixedly installed on the sound insulation and shock absorbing shell 21. The exhaust gas supply hose 7 and the exhaust gas exhaust hose 16 are elastic themselves and can be made of bellows or rubber tubes, so that the installation device 2 and the sound insulation and shock absorbing shell 21 are in a non-rigid fixed state, which greatly reduces the vibration directly transmitted to the sound insulation and shock absorbing shell 21 by the installation device 2, so that the vibration energy on the installation device 2 can be absorbed by the first shock absorbing seat 19 and the second shock absorbing seat 20 to the maximum extent. On the other hand, a closed valve is installed on the outside of the exhaust gas exhaust pipe 206. The closed valve can use a one-way valve that can prevent external air from entering the exhaust flow duct 203, so that the cold air outside the sound insulation and shock absorbing shell 21 can be prevented from entering the exhaust flow duct 203 and taking away the heat in the heat storage guide plate 204, thereby ensuring the insulation effect.

[0041] The heating device 3 includes a pair of end connecting frames 307 fixedly mounted with the mounting hole 205, and a central heat-conducting sleeve 301 is fixedly mounted between the end connecting frames 307, a heater 306 is arranged in the central heat-conducting sleeve 301, and at least four micro-porous plates 303 tightly fitted with the mounting hole 205 are arranged in a linear array on the central heat-conducting sleeve 301, and at least one pair of oblique guide plates 304 installed at an inclined angle relative to the axis of the central heat-conducting sleeve 301 for guiding the air flow direction are arranged between adjacent micro-porous plates 303. The central heat-conducting sleeve 301 and the oblique guide plates 304 are arranged at an inclined angle relative to the axis of the central heat-conducting sleeve 301. A heat-conducting column 302 is installed between the guide plates 304, an installation slot 305 is provided on the end connecting frame 307, and an anti-rotation limit protrusion 11 is provided in the installation hole 205 for sliding installation with the installation slot 305 to prevent the heating device 3 from shaking. The anti-rotation limit protrusion 11 can prevent the air flow from driving the heating device 3 to rotate or shake, thereby reducing the generation of vibration. When the heating device 3 is working, the heater 306 generates heat, and then transfers the heat to the central heat-conducting sleeve 301 and the heat-conducting column 302, and then passes through the central heat-conducting sleeve 301 and the heat-conducting column 302 transfer heat to the microporous plate 303 and the oblique guide plate 304. The heater 306 can be an electric heating wire heater. The heat-conducting layer 202 can also transfer the residual heat of the exhaust gas in the exhaust gas flow channel 203 and the heat stored by the heat storage guide plate 204 to the microporous plate 303 and the oblique guide plate 304. When the air moves along the heating channel and passes through the mounting hole 205, the air will pass through each microporous plate 303 in turn and contact with the microporous plate 303 in the process. At the same time, when the air passes through each microporous plate 303 It will also be guided by the oblique guide plate 304, so that the air rotates along the central heat-conducting column 302, which can effectively make the air in the mounting hole 205 become turbulent. Although this will increase the resistance of the air passing through the microporous plate 303 and cause the vibration of the mounting device 2, it can effectively improve the heat exchange efficiency. In addition, the number of mounting holes 205 can be increased according to the intake volume required by the diesel engine, thereby increasing the length of the heating channel, so that more air flow can be effectively heated and can also adapt to lower temperature environments.

[0042] The diesel engine intake duct assembly designed in this embodiment is mainly used for the cold start of the diesel engine, especially when the external temperature is lower than minus twenty degrees Celsius, the intake duct assembly provided by the present invention can be used to heat the air that the diesel engine needs to inhale, thereby improving the success rate of the cold start. Specifically, when the air temperature in the external environment of the automobile is higher than the preset value, the end of the air filter 13 is normally directly connected to the end connecting pipe 501 through the reversing valve 503, and when the external air is lower than the preset value, the reversing valve 503 switches the end of the air filter 13 to be connected to the heating channel. At this time, the heating device 3 can be used to heat the air and then send it to the end connecting pipe 501, thereby ensuring the normal start of the diesel engine, and the heating efficiency is high during the heating process, which can effectively realize the waste heat recovery of the exhaust gas, and at the same time can effectively reduce vibration and noise, so it can meet the use needs of the existing market, thereby solving the problem that the existing diesel engine intake pipe has an unsatisfactory air heating effect during cold start and is prone to vibration and noise, and can effectively improve the cold start performance of the diesel engine under low temperature conditions.

[0043] Embodiment 2, please refer to, based on Embodiment 1, a vacuum tube 17 for connecting the inner cavity of the soundproof and shock-absorbing shell 21 is fixedly installed on the soundproof and shock-absorbing shell 21, which is convenient for external vacuum equipment to vacuum the inner cavity of the soundproof and shock-absorbing shell 21, and a one-way closing valve 6 is installed on the vacuum tube 17, which only allows gas to be extracted from the inner cavity of the soundproof and shock-absorbing shell 21. A barometer 15 for detecting the internal air pressure of the soundproof and shock-absorbing shell 21 is fixedly installed on the soundproof and shock-absorbing shell 21. By vacuuming the inner cavity of the soundproof and shock-absorbing shell 21, the transmission path of the internal noise of the installation device 2 can be effectively cut off, thereby greatly reducing noise pollution. It further solves the problem that the existing diesel engine intake pipe has an unsatisfactory air heating effect during cold start and is prone to vibration and noise, and can effectively improve the cold start performance of the diesel engine under low temperature conditions.

[0044] Embodiment 3, please refer to, on the basis of Embodiment 2, the air inlet 401 is connected to the reversing valve 503 through the air supply hose 8 installed on the sound insulation and shock absorbing shell 21, and the air exhaust port 403 is connected to the terminal connecting pipe 501 through the air exhaust hose 9 installed on the sound insulation and shock absorbing shell 21, and both the air supply hose 8 and the air exhaust hose 9 can use a corrugated tube or rubber tube with greater bending flexibility, so that it is possible to effectively avoid a rigid connection between the mounting device 2 and the sound insulation and shock absorbing shell 21, thereby avoiding the vibration generated by the mounting device 2 from being directly transmitted to the main intake pipe 5 by the air supply hose 8 and the air exhaust hose 9, further solving the problem that the existing diesel engine intake pipe has an unsatisfactory air heating effect during cold start and is prone to vibration and noise, and can effectively improve the cold start performance of the diesel engine under low temperature conditions.

[0045] Embodiment 4: Based on Embodiment 3, the present invention further provides a method for using an intake pipe assembly of a diesel engine of an automobile, comprising the following steps:

[0046] Step 1: When the car needs to be cold-started, the on-board computer detects the outside air temperature through the second temperature sensor 14. When the air temperature is higher than the preset value, the reversing valve 503 directly connects the air filter 13 with the terminal connecting pipe 501. At this time, the air can be directly sent to the diesel engine of the car through the main intake pipe 5. When the outside air temperature is lower than the preset value, the reversing valve 503 connects the end of the air filter 13 with the heating channel. At this time, the air is sent into the heating channel;

[0047] Step 2: When the air enters the heating channel, the heating device 3 starts to work, thereby heating the air in the heating channel. When the air passes through the heating channel and enters the terminal connecting pipe 501, the temperature of the air can be raised to a temperature suitable for the diesel engine cylinder, thereby improving the success rate of starting the diesel engine.

[0048] Step 3: A portion of the exhaust gas generated by the diesel engine during use will be sent into the exhaust gas flow duct 203, so that the waste heat in the exhaust gas can be recovered for heating the air, and the heat can also be stored for heat storage to facilitate the next cold start, which can effectively meet the energy-saving needs of vehicles that require frequent intermittent starts.

[0049] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. An automotive diesel engine intake pipe assembly, characterized in that: include: A main air intake pipe (5), the main air intake pipe (5) being composed of a front connecting pipe (502) and a terminal connecting pipe (501) connected together, an air filter (13) being installed at the inlet end of the front connecting pipe (502), and a reversing valve (503) being installed on the front connecting pipe (502), an intake manifold (1) connected to a cylinder of a diesel engine being installed at the output end of the terminal connecting pipe (501), and a throttle valve (12) being installed on the terminal connecting pipe (501); The installation device (2) comprises a heat-insulating shell (207), wherein at least four installation holes (205) for installing a heating device (3) are provided in the heat-insulating shell (207), a connecting end cover (4) is fixedly installed at the end of the heat-insulating shell (207), and the connecting end cover (4) connects the installation holes (205) in series via a connecting pipe (402) to form a heating channel, wherein the front end of the heating channel is connected to the reversing valve (503) via an air inlet (401), and the rear end of the heating channel is connected to the reversing valve (503) via an air outlet (402). 403) is connected to the terminal connecting pipe (501), the interior of the installation device (2) is isolated by a heat storage guide plate (204) to form an exhaust gas flow channel (203), and a heat conductive layer (202) is installed between the installation hole (205) and the exhaust gas flow channel (203), and the exhaust gas intake pipe (201) and the exhaust gas exhaust pipe (206) are respectively arranged at the head and tail ends of the exhaust gas flow channel (203), and the exhaust gas intake pipe (201) is connected to the exhaust gas filter (18), and the exhaust gas filter (18) is connected to the exhaust pipe of the diesel engine on the vehicle; A soundproofing and shock absorbing shell (21), wherein the soundproofing and shock absorbing shell (21) is fixedly mounted on a vehicle frame, and the soundproofing and shock absorbing shell (21) fixes a mounting device (2) in an inner cavity of the soundproofing and shock absorbing shell (21) via a first shock absorbing seat (19) and a second shock absorbing seat (20), an exhaust gas supply hose (7) for connecting an exhaust gas intake pipe (201) and an exhaust gas filter (18) is fixedly mounted on the soundproofing and shock absorbing shell (21), and an exhaust gas discharge hose (16) for connecting an exhaust gas discharge pipe (206) and an external closed valve is fixedly mounted on the soundproofing and shock absorbing shell (21), and the heating device (3) comprises a pair of end connecting frames (307) fixedly mounted on the mounting hole (205), and a central heat conducting sleeve ( 301), a heater (306) is arranged in the central heat-conducting sleeve (301), and at least four microporous plates (303) that are tightly fitted with the mounting holes (205) are arranged in a linear array on the central heat-conducting sleeve (301), and at least one pair of oblique guide plates (304) that are installed at an inclined angle relative to the axis of the central heat-conducting sleeve (301) for guiding the air flow direction are arranged between adjacent microporous plates (303), a heat-conducting column (302) is installed between the central heat-conducting sleeve (301) and the oblique guide plates (304), a mounting slot (305) is provided on the end connecting frame (307), and an anti-rotation limit protrusion (11) that is slidably installed with the mounting slot (305) for preventing the heating device (3) from shaking is arranged in the mounting hole (205).

2. The automotive diesel engine intake pipe assembly according to claim 1, characterized in that: A first temperature sensor (10) for detecting the temperature of air in the mounting hole (205) is fixedly mounted on the mounting device (2), and a second temperature sensor (14) is fixedly mounted on the front connecting pipe (502); the first temperature sensor (10), the second temperature sensor (14) and the reversing valve (503) are all electrically connected to the vehicle's onboard computer.

3. The automotive diesel engine intake pipe assembly according to claim 1, characterized in that: The sound insulation and shock absorbing shell (21) is fixedly mounted with a vacuum tube (17) for connecting to the inner cavity of the sound insulation and shock absorbing shell (21) to facilitate external vacuum equipment to vacuum the inner cavity of the sound insulation and shock absorbing shell (21), and a one-way closing valve (6) is installed on the vacuum tube (17) for only allowing gas to be extracted from the inner cavity of the sound insulation and shock absorbing shell (21). The sound insulation and shock absorbing shell (21) is fixedly mounted with a barometer (15) for detecting the internal air pressure of the sound insulation and shock absorbing shell (21).

4. The automotive diesel engine intake pipe assembly according to claim 1, characterized in that: The air inlet (401) is connected to the reversing valve (503) via an air supply hose (8) installed on the sound insulation and shock absorption shell (21), and the air outlet (403) is connected to the terminal connecting pipe (501) via an air exhaust hose (9) installed on the sound insulation and shock absorption shell (21).

5. The automotive diesel engine intake pipe assembly according to claim 1, characterized in that: The second shock absorbing seat (20) is fixed to the upper and lower ends of the heat insulating shell (207), and the second shock absorbing seat (20) is formed by combining a spring and a rubber pad.

6. The automotive diesel engine intake pipe assembly according to claim 1, characterized in that: The first shock absorbing seat (19) is fixed to the side of the heat-insulating shell (207), and the first shock absorbing seat (19) is formed by combining a spring and a rubber pad.

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