An automatically adjustable heavy truck exhaust pipe

Abstract

This utility model relates to an automatically adjustable exhaust pipe for heavy-duty trucks, overcoming the limitations of traditional fixed exhaust pipes. It includes an exhaust pipe, a retractable clamp, a guide rail, a rail base, a hydraulic cylinder, and a sensor. One end of the exhaust pipe is connected to a muffler, and the other end is connected to the guide rail via the clamp. The guide rail can move up and down in a guide rail base mounted on the vehicle frame. The hydraulic cylinder is fixed to the bottom of the guide rail by a pin and is connected to a hydraulic pump via a hydraulic oil pipe. The sensor is fixed to the guide rail by a sensor bracket. The exhaust pipe is equipped with a corrugated exhaust pipe that can extend and retract during lifting and lowering. The sensor transmits real-time data to the vehicle control unit (ECU). The ECU generates lifting and lowering commands based on preset thresholds and sends them to the hydraulic cylinder. This utility model intelligently achieves adaptive lifting and lowering in various scenarios, possesses automatic adjustment capabilities, reduces the risk of chassis damage and stalling during water wading, extends service life, and reduces maintenance costs.

Description

Technical Field

[0001] This utility model relates to an automatically adjustable exhaust pipe for heavy-duty trucks, belonging to the field of heavy-duty trucks. Background Technology

[0002] The layout of exhaust pipes on existing heavy-duty trucks typically takes into account both the emission efficiency of the exhaust system and the safety of the surrounding area, placing them at a fixed height. Low-mounted exhaust pipes, in particular, are prone to water ingress during wading, causing damage to the exhaust system and engine; in complex road conditions, such as off-road tracks, construction sites, and rough terrain, the exhaust pipes are easily damaged by impacts.

[0003] The conventional layout of exhaust pipes for existing heavy-duty trucks, such as Figure 1 Located on the left or right side of the frame, the exhaust pipe 3 has a fixed height from the ground and cannot be adjusted. The exhaust pipe 3 is made of stainless steel, with one end connected to the muffler 1, and then connected to the frame 4 via a mounting bracket 2 for fixation at a fixed height of "H". Utility Model Content

[0004] The purpose of this invention is to provide an automatically adjustable exhaust pipe that improves vehicle applicability and safety by flexibly adjusting the height of the exhaust pipe from the ground to meet specific working conditions.

[0005] This utility model is achieved through the following technical solution:

[0006] An automatically adjustable heavy-duty truck exhaust pipe includes an exhaust pipe 11, a retractable clamp 12, a guide rail 9, a rail seat 7, a hydraulic cylinder 8, and a sensor 5. One end of the exhaust pipe 11 is connected to a muffler 1, and the other end is bolted to the guide rail 9 via the clamp 12. The guide rail 9 can move up and down in the guide rail seat 7 mounted on the frame 2. The hydraulic cylinder 8 is fixed to the bottom of the guide rail 9 via a pin 3 and is connected to a hydraulic pump via a hydraulic oil pipe 10. The sensor 5 is bolted to a sensor bracket 4, and the sensor bracket 4 is bolted to the guide rail 9. The exhaust pipe 11 is provided with an exhaust pipe corrugated pipe 6 that can extend and retract when the exhaust pipe 11 is raised or lowered. The sensor 5 transmits real-time data to the vehicle control unit (ECU). The ECU generates a raising or lowering command based on a preset threshold and sends the command to the hydraulic pump 8.

[0007] The exhaust pipe 11 is surface-treated with a high-temperature resistant ceramic coating.

[0008] This invention overcomes the limitations of traditional fixed exhaust pipes. Its intelligent design enables adaptive lifting and lowering in various scenarios, providing automatic adjustment capabilities, reducing the risk of engine stalling in water or chassis collisions, extending service life, and reducing maintenance costs. Attached Figure Description

[0009] Figure 1 It is the existing exhaust pipe layout for heavy-duty trucks.

[0010] Figure 2 This is a structural diagram of the utility model. Detailed Implementation

[0011] The purpose of this utility model is to provide an automatically adjustable exhaust pipe for heavy-duty trucks. The exhaust pipe can automatically adjust its height according to road conditions, preventing water ingress and impacts that could damage the exhaust system. One end of the exhaust pipe 11 is connected to the muffler 1, and the other end is bolted to the guide rail 9 via a clamp 12. The guide rail 9 can move up and down in the guide rail seat 7. The hydraulic cylinder 8 is fixed to the bottom of the guide rail 9 via a pin 3. One end of the hydraulic oil pipe 10 is connected to the hydraulic cylinder 8, and the other end is connected to the hydraulic pump. The sensor 5 is bolted to the sensor bracket 4, and the sensor bracket 4 is bolted to the guide rail 9.

[0012] Working steps: ① Sensor 5 senses and triggers, sensor 5 detects the wading depth (e.g., when the water depth exceeds 1 / 3 of the tire) or the ground clearance of the exhaust pipe 11 (e.g., protruding obstacles on rough roads). Sensor 5 transmits real-time data to the vehicle control unit (ECU). The ECU generates a lifting command based on a preset threshold. ② The ECU sends a command to the hydraulic pump to start the power source. The hydraulic pump delivers hydraulic oil to the hydraulic cylinder 8 through the hydraulic oil pipe 10. By controlling the direction of the oil flow, the lifting direction of the hydraulic cylinder 8 is controlled, pushing the piston part of the hydraulic cylinder to extend or retract. ③ The hydraulic cylinder 8 drives the guide rail 9 to vertically lift and lower along the guide rail seat 7 to the target height through the pin shaft 3. At the same time as the guide rail lifts and lowers, it drives the exhaust pipe 11 to lift and lower. The middle part of the exhaust pipe is a flexible corrugated hose, which can realize the extension and retraction of the exhaust pipe during lifting and lowering. ④ When leaving the wading area or the protruding obstacle area of ​​the complex road conditions, the ECU receives the data sent back by sensor 5 and issues a command to restore the default height. The default height is at the middle position of the guide rail stroke.

[0013] Features of this utility model:

[0014] The adjustable-height exhaust pipe of this utility model patent can raise the exhaust pipe under special working conditions, such as when driving through water, to prevent water from entering and protect the engine and exhaust system; and prevent the exhaust pipe from being bumped or knocked in complex off-road conditions.

[0015] The surface of the exhaust pipe is treated with a high-temperature resistant ceramic coating to reduce the surface temperature and prevent the high surface temperature from affecting the sensors installed on the exhaust pipe. A sensor-triggered start system is used. When the driver issues a lifting command, the hydraulic pump is started, which pushes the exhaust pipe to the target height. The sensor feeds back to the locking mechanism, which then locks the exhaust pipe and fixes it at a certain fixed height.

Claims

1. An automatically adjustable exhaust pipe for heavy-duty trucks, characterized in that: The system includes an exhaust pipe (11), a retractable clamp (12), a guide rail (9), a rail seat (7), a hydraulic cylinder (8), and a sensor (5). One end of the exhaust pipe (11) is connected to the muffler (1), and the other end is connected to the guide rail (9) via the clamp (12). The guide rail (9) can move up and down in the guide rail seat (7) mounted on the frame (2). The hydraulic cylinder (8) is fixed to the bottom of the guide rail (9) via a pin (3). The hydraulic cylinder (8) is connected to the hydraulic pump via a hydraulic oil pipe (10). The sensor (5) is fixed to the guide rail (9) via a sensor bracket (4). The exhaust pipe (11) is provided with an exhaust pipe corrugated pipe (6) that can extend and retract when the exhaust pipe (11) is raised or lowered. The sensor (5) transmits real-time data to the vehicle control unit (ECU). The ECU generates a lifting command based on a preset threshold and sends the command to the hydraulic cylinder (8).

2. The automatically adjustable heavy-duty truck exhaust pipe according to claim 1, characterized in that: The exhaust pipe (11) is surface treated with a high-temperature resistant ceramic coating.

3. The automatically adjustable heavy-duty truck exhaust pipe according to claim 1, characterized in that: The clamp (12) is bolted to the guide rail (9).

4. The automatically adjustable heavy-duty truck exhaust pipe according to claim 1, characterized in that: The sensor (5) is connected to the sensor bracket (4) by bolts.

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