A gasoline engine muffler

Abstract

The utility model relates to a gasoline engine silencer, including the silencer body, the silencer body be provided with the baffle, the baffle will silencer body be inclined and be divided into first chamber and second chamber, the silencer body be provided with the air inlet pipe of first chamber intercommunication, first through -hole be provided on the baffle, first chamber and second chamber be connected through first through -hole, the baffle be provided with first expansion plate and second expansion plate, first expansion plate and second expansion plate close and form third chamber and fourth chamber, third chamber and second chamber, fourth chamber are connected, the catalytic unit be provided in third chamber, the utility model discloses through setting first chamber, second chamber, third chamber and fourth chamber multiple chambers, can effectively prolong the flow path of airflow and the propagation path of noise, to this realization reduces the purpose of airflow temperature and silencing and noise reduction.

Description

Technical Field

[0001] This utility model belongs to the technical field of muffler equipment and relates to a gasoline engine muffler. Background Technology

[0002] Generator sets are commonly used in field operations, power outages, and other temporary or emergency situations. Their main structure generally includes a chassis, generator, engine, control box, muffler, and fuel tank. Engine exhaust noise is the main noise source of generator sets; therefore, it is necessary to improve the internal structure of the muffler to achieve noise reduction.

[0003] Meanwhile, the exhaust gas produced during engine operation contains harmful gases such as CO, HC, and NOx, requiring a catalytic converter to be designed inside the muffler to purify the exhaust gas. Because combustion and oxidation reactions occur as the exhaust gas passes through the catalytic converter, the temperature of the catalytic converter rises. Furthermore, the temperature of the exhaust gas after catalysis also increases, consequently raising the temperature of the entire muffler and shortening its lifespan. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a gasoline engine muffler.

[0005] The objective of this utility model can be achieved through the following technical solution: A gasoline engine muffler includes a muffler body, a partition is provided inside the muffler body, the partition obliquely divides the muffler body into a first chamber and a second chamber, an intake pipe connected to the first chamber is provided on the muffler body, a first through hole is provided on the partition, the first chamber and the second chamber are connected through the first through hole, a first expansion plate and a second expansion plate are provided on the partition, the first expansion plate and the second expansion plate close to form a third chamber and a fourth chamber, the third chamber is connected to the second chamber and the fourth chamber, a catalytic unit is provided in the third chamber, and an exhaust port connected to the outside is provided in the fourth chamber.

[0006] In the above-mentioned gasoline engine muffler, a second through hole is provided on the third chamber, and the second chamber and the third chamber are connected through the second through hole.

[0007] In the above-mentioned gasoline engine muffler, a guide plate is provided on the partition plate, and the guide plate is located above the first through hole.

[0008] In the above-mentioned gasoline engine muffler, the intake pipe is arranged vertically upward and is connected to the inner wall of the muffler body through the partition. Several air holes are opened at the connection between the intake pipe and the first chamber.

[0009] In the aforementioned gasoline engine muffler, a mounting flange is provided at the lower end of the intake pipe.

[0010] Compared with the prior art, this utility model, by setting up multiple chambers including a first chamber, a second chamber, a third chamber, and a fourth chamber, can effectively extend the airflow path and the noise propagation path, thereby achieving the purpose of reducing airflow temperature and noise reduction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional view of the present invention;

[0013] Figure 3 This is another cross-sectional view of the present invention.

[0014] In the diagram, 1 is the muffler body; 2 is the baffle plate; 3 is the first chamber; 4 is the second chamber; 5 is the air intake pipe; 6 is the first through hole; 8 is the first expansion plate; 9 is the second expansion plate; 10 is the third chamber; 11 is the fourth chamber; 12 is the catalytic unit; 13 is the second through hole; 14 is the guide plate; 15 is the vent; and 16 is the mounting flange. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0016] like Figures 1 to 3 As shown, a gasoline engine muffler includes a muffler body 1. A partition 2 is provided inside the muffler body 1, which obliquely divides the muffler body 1 into a first chamber 3 and a second chamber 4. An intake pipe 5 connected to the first chamber 3 is provided on the muffler body 1. The intake pipe 5 is vertically upward and passes through the partition 2 to connect with the inner wall of the muffler body 1. A plurality of air holes 15 are provided at the connection between the intake pipe 5 and the first chamber 3.

[0017] The partition 2 is provided with a first through hole 6. The first chamber 3 and the second chamber 4 are connected through the first through hole 6. The partition 2 is provided with a first expansion plate 8 and a second expansion plate 9. The first expansion plate 8 and the second expansion plate 9 are closed to form a third chamber 10 and a fourth chamber 11. The third chamber 10 is connected to the second chamber 4 and the fourth chamber 11. A catalytic unit 12 is provided in the third chamber 10. The catalytic unit 12, i.e., the catalyst catalytic unit 12, fills the entire third chamber 10. The fourth chamber 11 is provided with an outlet that is connected to the outside.

[0018] The third chamber 10 is provided with a second through hole 13, and the second chamber 4 and the third chamber 10 are connected through the second through hole 13.

[0019] The partition 2 is provided with a guide plate 14, which is located above the first through hole 6. Since the exhaust gas rises, the guide plate 14 guides the exhaust gas and pushes it downward, thereby increasing the travel distance of the exhaust gas flow.

[0020] The lower end of the air intake pipe 5 is provided with a mounting flange 16.

[0021] When the exhaust muffler is working, the exhaust gas generated by the gasoline engine enters the first chamber 3 through the intake pipe 5. The exhaust gas in the first chamber 3 enters the second chamber 4 through the first through hole 6. The exhaust gas is cooled as it passes through the first chamber 3 and the second chamber 4. The exhaust gas in the second chamber 4 enters the third chamber 10 through the second through hole 13. The exhaust gas is purified by the catalytic converter 12 as it passes through the catalytic converter 12. After purification, the exhaust gas passes through the fourth chamber 11 and is finally discharged from the outlet of the fourth chamber 11. This prolongs the airflow path and the noise propagation path, thereby achieving the purpose of reducing airflow temperature and noise reduction.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A gasoline engine muffler, comprising a muffler body (1), characterized in that, The muffler body (1) is provided with a partition (2), which divides the muffler body (1) into a first chamber (3) and a second chamber (4) at an inclination. The muffler body (1) is provided with an air inlet pipe (5) that communicates with the first chamber (3). The partition (2) is provided with a first through hole (6). The first chamber (3) and the second chamber (4) are connected through the first through hole (6). The partition (2) is provided with a first expansion plate (8) and a second expansion plate (9). The first expansion plate (8) and the second expansion plate (9) are closed to form a third chamber (10) and a fourth chamber (11). The third chamber (10) is connected to the second chamber (4) and the fourth chamber (11). The third chamber (10) is provided with a catalytic unit (12). The fourth chamber (11) is provided with an air outlet that communicates with the outside.

2. A gasoline engine muffler according to claim 1, characterized in that: The third chamber (10) is provided with a second through hole (13), and the second chamber (4) and the third chamber (10) are connected through the second through hole (13).

3. A gasoline engine muffler according to claim 2, characterized in that: The partition (2) is provided with a guide plate (14), which is located above the first through hole (6).

4. A gasoline engine muffler according to claim 3, characterized in that: The air intake pipe (5) is set vertically upward and passes through the partition (2) and is connected to the inner wall of the muffler body (1). Several air holes (15) are opened at the connection between the air intake pipe (5) and the first chamber (3).

5. A gasoline engine muffler according to claim 4, characterized in that: The lower end of the air intake pipe (5) is provided with a mounting flange (16).

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