A device for detecting clogging of an exhaust pipe of an automobile

Abstract

The utility model provides a kind of automobile exhaust pipe blockage detection device, belong to automobile fault diagnosis field, including equipment shell, the inside of equipment shell is provided with the detection component for blockage detection, the side wall of equipment shell is provided with the interactive component for data processing, the side wall of equipment shell is provided with the warning component for prompting.The utility model is equipped with detection component, when using, first pressure sensor and second pressure sensor work cooperatively, integrated temperature sensor parameter, through temperature and pressure cooperative processor real-time calibration ambient air pressure and temperature interference, avoid single parameter false alarm, identification accuracy is high, simultaneously detachable filter screen filters large particle impurities, reduces carbon deposit;Detachable filter screen can be disassembled and cleaned, prolongs sensor cleaning cycle.

Description

Technical Field

[0001] This utility model relates to the field of automotive fault diagnosis, and more specifically, to an automotive exhaust pipe blockage detection device. Background Technology

[0002] As a core component of the engine exhaust system, the unobstructed flow of the exhaust pipe directly affects engine power performance, fuel economy, and driving safety. Exhaust pipe blockage leads to increased exhaust back pressure, causing a decrease in engine power, a surge in fuel consumption, and in severe cases, may cause engine overheating, stalling, or even spontaneous combustion. However, current exhaust pipe blockage detection methods still have the following shortcomings:

[0003] Traditional exhaust pipe blockage detection methods typically rely on drivers' subjective experiences such as reduced power, idling vibrations, and abnormal exhaust emissions to detect problems. By this time, the blockage is already severe and may cause irreversible engine damage. Alternatively, methods using only a single pressure sensor are susceptible to ambient air pressure and instantaneous exhaust fluctuations, resulting in a high false alarm rate. Furthermore, the lack of temperature-related assessments makes it difficult to distinguish between normal high-load exhaust and pressure increases caused by blockage. Therefore, a new automotive exhaust pipe blockage detection device is proposed. Utility Model Content

[0004] The purpose of this invention is to address the problems of traditional exhaust pipe blockage detection, which mainly relies on manual experience, such as inferring from abnormal engine noises or reduced power. This method is inaccurate, has a strong lag, requires disassembling the exhaust pipe, is cumbersome and can cause unnecessary damage to the vehicle, lacks auxiliary judgment criteria, and has imperfect data recording, transmission and warning functions, making it difficult to meet the needs of efficient and accurate detection. The invention provides an automotive exhaust pipe blockage detection device to solve the problems mentioned in the background.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] The present invention is as follows: a vehicle exhaust pipe blockage detection device, comprising a device housing, a detection component for blockage detection disposed inside the device housing, an interactive component for data processing disposed on the side wall of the device housing, and a warning component for reminder disposed on the side wall of the device housing;

[0007] The detection component includes a partition disposed inside the device housing, which divides the interior of the device housing into a device cavity, a detection pressure cavity, and a calibration pressure cavity. A first pressure sensor is disposed inside the detection pressure cavity. An air inlet pipe and an exhaust pipe are connected to the bottom of the first pressure sensor. The ends of the air inlet pipe and the exhaust pipe away from the first pressure sensor penetrate through the side wall of the device housing. A temperature sensor is disposed inside the air inlet pipe. A removable filter is disposed at the end of the air inlet pipe away from the first pressure sensor. A second pressure sensor is disposed inside the calibration pressure cavity. A connecting hole is opened on the side wall of the device housing near the second pressure sensor. A temperature and pressure co-processor is disposed inside the device cavity. The temperature and pressure co-processor is electrically connected to the first pressure sensor, the temperature sensor, and the second pressure sensor.

[0008] As a preferred technical solution of this utility model, the interactive component includes a display disposed on the side wall of the device housing, a data storage module disposed inside the device cavity, the data storage module being electrically connected to the temperature and pressure coprocessor, and a wireless communication module disposed inside the device cavity.

[0009] As a preferred technical solution of this utility model, the warning component includes a status indicator light disposed on the side wall of the device housing, and a buzzer alarm is disposed on the side wall of the device housing.

[0010] As a preferred technical solution of this utility model, a backup power supply is provided inside the equipment cavity, and a power switching switch is provided on the side wall of the equipment shell, and the power switching switch is electrically connected to the backup power supply.

[0011] As a preferred technical solution of this utility model, a mounting bracket is provided on the side wall of the equipment housing, and a plurality of oblong holes are provided on the mounting bracket, with mounting bolts provided inside the oblong holes.

[0012] As a preferred technical solution of this utility model, the end of the air intake pipe and the exhaust pipe away from the equipment casing is fixedly connected to a connecting flange, and a high-temperature resistant sealing gasket is provided on the side wall of the connecting flange.

[0013] As a preferred technical solution of this utility model, the air intake pipe is made of nickel-based alloy, and the inner wall of the air intake pipe is provided with a ceramic coating.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. With the set detection components, the first and second pressure sensors work together during use, and the temperature sensor parameters are integrated. The temperature and pressure coprocessor is used to calibrate the ambient air pressure and temperature interference in real time, avoiding false alarms from a single parameter and achieving high recognition accuracy. At the same time, the removable filter screen filters out large particulate impurities and reduces carbon buildup; the removable filter screen can be removed and cleaned, extending the sensor cleaning cycle.

[0016] 2. With the set warning components, the status indicator light can intuitively distinguish between normal and blocked states through color when in use, and the buzzer alarm can actively remind you by sound. Even if the user is not paying attention to the device, they can know about the abnormality in time, which solves the problems of delayed and unintuitive warnings. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of an automotive exhaust pipe blockage detection device provided by this utility model;

[0018] Figure 2 A schematic diagram of the overall structure of an automotive exhaust pipe blockage detection device provided by this utility model;

[0019] Figure 3 A left-side view of a vehicle exhaust pipe blockage detection device provided by this utility model;

[0020] Figure 4 This utility model provides a device for detecting blockages in automotive exhaust pipes. Figure 3 Planar sectional view at point AA;

[0021] Figure 5 This is a rear view structural diagram of an automotive exhaust pipe blockage detection device provided by this utility model.

[0022] The diagram shows: 1. Equipment casing; 2. Detection component; 3. Interaction component; 4. Warning component; 5. Backup power supply; 6. Power switch; 7. Mounting bracket; 8. Oblong hole; 9. Mounting bolt; 10. Connecting flange; 11. High-temperature resistant sealing gasket; 201. Partition plate; 202. Equipment cavity; 203. Detection pressure chamber; 204. Calibration pressure chamber; 205. First pressure sensor; 206. Inlet pipe; 207. Exhaust pipe; 208. Temperature sensor; 209. Removable filter; 210. Second pressure sensor; 211. Connecting hole; 212. Temperature and pressure co-processor; 301. Display; 302. Data storage module; 303. Wireless communication module; 401. Status indicator light; 402. Buzzer alarm. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0024] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] As shown in the figure, this embodiment proposes a vehicle exhaust pipe blockage detection device, including a device housing 1, a detection component 2 for blockage detection is provided inside the device housing 1, an interactive component 3 for data processing is provided on the side wall of the device housing 1, and a warning component 4 for reminder is provided on the side wall of the device housing 1.

[0028] like Figure 2 , Figure 4 and Figure 5As shown, the detection component 2 includes a partition 201 disposed inside the equipment housing 1. The partition 201 divides the interior of the equipment housing 1 into an equipment cavity 202, a detection pressure cavity 203, and a calibration pressure cavity 204, avoiding airflow interference between different chambers and reducing electromagnetic interference. A first pressure sensor 205 is disposed inside the detection pressure cavity 203. An intake pipe 206 and an exhaust pipe 207 are connected to the bottom of the first pressure sensor 205. The ends of the intake pipe 206 and the exhaust pipe 207 away from the first pressure sensor 205 penetrate through the side wall of the equipment housing 1 to monitor the core parameter of exhaust pressure. Pressure change is the most intuitive feature of exhaust pipe blockage. A temperature sensor 208 is disposed inside the intake pipe 206. The temperature sensor 208 directly contacts the exhaust pipe. The airflow is monitored by sensing temperature changes. A removable filter 209 is installed at the end of the air intake pipe 206 away from the first pressure sensor 205 to prevent the sensor from being covered by carbon deposits and causing detection failure. A second pressure sensor 210 is installed inside the calibration pressure chamber 204. A connecting hole 211 is opened on the side wall of the device housing 1 near the second pressure sensor 210 to solve the problem of traditional single pressure sensors being affected by ambient air pressure fluctuations. A temperature and pressure co-processor 212 is installed inside the device cavity 202. The temperature and pressure co-processor 212 is electrically connected to the first pressure sensor 205, the temperature sensor 208 and the second pressure sensor 210. Through the coordinated judgment of pressure abnormality and temperature abnormality, the influence of ambient air pressure can be dynamically corrected to avoid false alarms of a single parameter. In use, the partition 201 divides the interior of the device housing 1 into three independent spaces: the device cavity 202, the pressure detection cavity 203, and the pressure calibration cavity 204, physically isolating components with different functions. The first pressure sensor 205 is installed in the cavity and connected to the vehicle exhaust pipe through the intake pipe 206. It senses the dynamic pressure in the exhaust pipe in real time and converts the pressure signal into an electrical signal, which is then transmitted to the temperature and pressure coprocessor 212. The temperature sensor 208 is installed inside the intake pipe 206 and is in direct contact with the exhaust airflow. It senses temperature changes and converts the temperature signal into an electrical signal, which is then transmitted to the temperature and pressure coprocessor 212. A removable filter screen prevents impurities from entering the pipe and clogging the sensor or affecting pressure transmission. The second pressure sensor 210 is connected to the ambient atmosphere through the connecting hole 211 on the side wall of the device housing 1. It detects the ambient atmospheric pressure in real time and transmits it as a reference pressure to the temperature and pressure coprocessor 212 for calibrating the detection value of the first pressure sensor 205.

[0029] like Figure 2 and Figure 4As shown, the interactive component 3 includes a display 301 mounted on the side wall of the device housing 1, allowing users to intuitively understand relevant information about the exhaust pipe, facilitating user viewing and judgment. The device cavity 202 contains a data storage module 302, which can save historical detection data. The data storage module 302 is electrically connected to the temperature and pressure coprocessor 212. The device cavity 202 also contains a wireless communication module 303, enabling remote data transmission. Users can obtain detection information without being near the device, improving ease of use. During use, the display 301 shows detected pressure, temperature, and other data, as well as the device's operating status. The data storage module 302 stores the detected data, and the wireless communication module 303 wirelessly transmits the detection data to other devices.

[0030] like Figure 2 As shown, the warning component 4 includes a status indicator light 401 disposed on the side wall of the device housing 1, and a buzzer alarm 402 disposed on the side wall of the device housing 1. In use, the status indicator light 401 displays the status of the exhaust pipe through different light colors, such as green for normal and red for blockage. When a blockage is detected in the exhaust pipe, the buzzer alarm 402 will sound an alarm.

[0031] like Figure 4 As shown, a backup power supply 5 is installed inside the device housing 1, and a power switching switch 6 is installed on the side wall of the device cavity 202. The power switching switch 6 is electrically connected to the backup power supply 5. In use, the backup power supply 5 can supply power to the device when the vehicle's power supply fails, and the device can also be manually switched to the backup power supply 5 via the power switching switch 6.

[0032] like Figure 1 As shown, a mounting bracket 7 is provided on the side wall of the device housing 1. The mounting bracket 7 has several oblong holes 8, and mounting bolts 9 are installed inside the oblong holes 8. In use, the mounting bracket 7 fixes the device to the vehicle through the oblong holes 8 and the mounting bolts 9, which facilitates the installation and fixation of the device.

[0033] like Figure 1 As shown, the intake pipe 206 and the exhaust pipe 207 are fixedly connected to a connecting flange 10 at the ends away from the equipment housing 1, and a high-temperature resistant sealing gasket 11 is provided on the side wall of the connecting flange 10. In use, the connecting flange 10 is used to connect the intake pipe 206 to the vehicle exhaust pipe, making the connection between the intake pipe 206 and the exhaust pipe tighter and more secure, and reducing gas leakage.

[0034] like Figure 2As shown, the intake pipe 206 is made of nickel-based alloy, and its inner wall is coated with a ceramic coating. During use, the nickel-based alloy exhibits excellent high-temperature resistance and corrosion resistance, enabling it to withstand the high-temperature environment inside the exhaust pipe and resist corrosion damage. The ceramic coating provides high-temperature resistance, wear resistance, and a smooth surface, further enhancing the high-temperature resistance and wear resistance of the intake pipe 206 and extending its service life.

[0035] Specifically, in use, this automotive exhaust pipe blockage detection device divides the interior of the device housing 1 into three independent spaces: a device cavity 202, a detection pressure cavity 203, and a calibration pressure cavity 204, physically isolating components with different functions. A first pressure sensor 205 is installed inside the cavity and connected to the automotive exhaust pipe via an intake pipe 206. It senses the dynamic pressure inside the exhaust pipe in real time and converts the pressure signal into an electrical signal, which is then transmitted to the temperature-pressure coprocessor 212. A temperature sensor 208 is installed inside the intake pipe 206, directly contacting the exhaust airflow. It senses temperature changes and converts the temperature signal into an electrical signal, which is then transmitted to the temperature-pressure coprocessor 212. A removable filter prevents impurities from entering the pipe and clogging the sensor or affecting pressure transmission. A second pressure sensor 210 is connected to the ambient atmosphere through a connecting hole 211 on the side wall of the device housing 1. It detects the ambient atmospheric pressure in real time and transmits it as a reference pressure to the temperature-pressure coprocessor 212 for calibrating the detection value of the first pressure sensor 205 (e.g., ...). Figure 2 , Figure 4 and Figure 5 As shown), the display 301 can display detected data such as pressure and temperature, as well as the operating status of the device. The data storage module 302 is used to store the detected data, and the wireless communication module 303 wirelessly transmits the detected data to other devices (such as...). Figure 2 and Figure 4 As shown), the status indicator light 401 displays the status of the exhaust pipe using different light colors, such as green for normal and red for blockage. When a blockage is detected in the exhaust pipe, the buzzer alarm 402 will sound an audible alarm (e.g., ...). Figure 2 As shown), when the vehicle's power supply fails, the backup power supply 5 can supply power to the device, and it can also be manually switched to the backup power supply 5 via the power switching switch 6 (as shown). Figure 4 (As shown).

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A device for detecting clogging of an exhaust pipe of an automobile, comprising a device housing (1), characterized in that, The device housing (1) is provided with a detection component (2) for blockage detection inside, an interactive component (3) for data processing is provided on the side wall of the device housing (1), and a warning component (4) for reminder is provided on the side wall of the device housing (1). The detection component (2) includes a partition (201) disposed inside the device housing (1). The partition (201) divides the interior of the device housing (1) into a device cavity (202), a detection pressure cavity (203), and a calibration pressure cavity (204). A first pressure sensor (205) is disposed inside the detection pressure cavity (203). An air inlet pipe (206) and an exhaust pipe (207) are connected to the bottom of the first pressure sensor (205). The ends of the air inlet pipe (206) and the exhaust pipe (207) away from the first pressure sensor (205) penetrate the side wall of the device housing (1). The device (06) is equipped with a temperature sensor (208) inside. The end of the air intake pipe (206) away from the first pressure sensor (205) is equipped with a removable filter (209). The calibration pressure chamber (204) is equipped with a second pressure sensor (210). The device housing (1) is provided with a connecting hole (211) on the side wall near the second pressure sensor (210). The device cavity (202) is equipped with a temperature and pressure coprocessor (212). The temperature and pressure coprocessor (212) is electrically connected to the first pressure sensor (205), the temperature sensor (208), and the second pressure sensor (210).

2. The device according to claim 1, wherein The interactive component (3) includes a display (301) disposed on the side wall of the device housing (1), a data storage module (302) disposed inside the device cavity (202), the data storage module (302) being electrically connected to the temperature and pressure co-sensor, and a wireless communication module (303) disposed inside the device cavity (202).

3. The device for detecting the clogging of an exhaust pipe of an automobile according to claim 1, wherein The warning component (4) includes a status indicator light (401) disposed on the side wall of the device housing (1), and a buzzer alarm (402) disposed on the side wall of the device housing (1).

4. The device for detecting the clogging of an exhaust pipe of an automobile according to claim 1, wherein The equipment cavity (202) is equipped with a backup power supply (5), and the equipment housing (1) is equipped with a power switching switch (6) on its side wall. The power switching switch (6) is electrically connected to the backup power supply (5).

5. The automobile exhaust pipe blockage detection device according to claim 1, characterized in that, The device housing (1) has a mounting bracket (7) on its side wall. The mounting bracket (7) has several oblong holes (8) and mounting bolts (9) are installed inside the oblong holes (8).

6. The automobile exhaust pipe blockage detection device according to claim 1, characterized in that, The intake pipe (206) and exhaust pipe (207) are fixedly connected to a connecting flange (10) at the end away from the equipment casing (1), and a high-temperature resistant sealing gasket (11) is provided on the side wall of the connecting flange (10).

7. The automobile exhaust pipe blockage detection device according to claim 1, characterized in that, The intake pipe (206) is made of nickel-based alloy, and the inner wall of the intake pipe (206) is provided with a ceramic coating.

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