Exhaust assembly for improving power of motorcycle engine

Abstract

The utility model discloses an exhaust assembly for improving the power of a motorcycle engine. The exhaust assembly comprises an exhaust pipe and a silencer. The exhaust pipe is formed by sequentially connecting a connector, a flange block, an exhaust pipe front section, a catalyst sleeve and an exhaust pipe rear section, and a first catalytic converter is arranged in the catalyst sleeve; the silencer is formed by sequentially connecting a connector, an air inlet pipe and a silencer cylinder, and a second catalytic converter is arranged in the air inlet pipe. The exhaust pipe and the silencer are fixedly connected through the exhaust pipe rear section and the connector by adopting a hoop; the exhaust assembly is stable in structure and high in reliability, the space position of the exhaust pipe is optimized, exhaust is smoother on the premise that assembly of the exhaust assembly and other parts of the whole vehicle is not affected, exhaust resistance is greatly reduced, and oil consumption is reduced.

Description

Technical Field

[0001] The utility model relates to an exhaust component, in particular to an exhaust component for improving the power of a motorcycle engine. Background Art

[0002] The principle of the exhaust pipe assembly and muffler assembly of a motorcycle exhaust system is that the engine discharges the combustion gas, which enters the exhaust pipe assembly from the engine outlet, passes through the catalyst, enters the muffler assembly, passes through the catalyst again, and circulates in the muffler before being discharged into the air.

[0003] At present, the exhaust system has the following disadvantages: (1) The diameter of the exhaust pipe assembly is small, the exhaust resistance is too large, and the exhaust resistance increases with the increase of usage time, resulting in more incomplete combustion, greater fuel waste, and the amount of fuel that is cracked into harmful substances also increases with the increase of usage time; (2) Only the middle part of the catalytic converter is used more, and the catalyst utilization rate is low. The diameter of most catalytic converters is larger than the diameter of the exhaust pipe. The air flow passes through the middle part of the catalytic converter more, and the catalytic reaction only occurs in the middle part, resulting in low utilization rate; (3) The service life is short. Due to the unreasonable installation structure of the catalyst, the single-side installation structure is more likely to be damaged and fall off under long-term vibration environment. The catalyst installation structure in the muffler is unreliable and there is a risk of damage; (4) The inherent power loss increases with usage time: Due to the limitations of its principle, the unburned fuel and its thermal cracking products, carbon particles and water in the exhaust gradually adhere to and block the static holes, slits, baffles and sound-absorbing materials, forming a gradually increasing exhaust resistance. This problem is more significant in exhaust pipe assemblies with smaller diameters. Summary of the Invention

[0004] Purpose of the invention: The purpose of this utility model is to provide an exhaust assembly with optimized structure and high reliability for improving the power of motorcycle engines.

[0005] Technical Solution: This utility model's exhaust assembly for increasing motorcycle engine power comprises an exhaust pipe and a muffler. The exhaust pipe comprises a connector, a flange block, a front section of the exhaust pipe, a catalyst sleeve, and a rear section of the exhaust pipe, connected in sequence. The catalyst sleeve houses a first catalytic converter. The muffler comprises a connector, an intake pipe, and a muffler barrel, connected in sequence. The intake pipe houses a second catalytic converter. The exhaust pipe and muffler are fixedly connected to the connector via a clamp through the rear section of the exhaust pipe. The intake pipe structure is optimized, with the catalytic converter moved from being welded to one side of the muffler barrel to being press-fitted inside the intake pipe. This provides a more reliable installation and increases service life.

[0006] Among them, the diameter of the front section of the exhaust pipe increases from thin to thick, and the diameter of the thick section is 1.2 to 1.4 times that of the thin section. By increasing the diameter of the exhaust pipe assembly to a maximum of 1.4 times the original diameter, the spatial position of the exhaust pipe is optimized, and the exhaust is made smoother without affecting the assembly with other parts of the vehicle. At the same time, the exhaust resistance is greatly reduced and the fuel consumption is reduced; the diameters of the catalyst sleeve, the rear section of the exhaust pipe and the intake pipe are the same as the diameter of the thick section of the front section of the exhaust pipe, and the diameter of the joint is increased in the same proportion as the rear section of the exhaust pipe. The gas fully passes through the catalytic converter, thereby improving the catalytic efficiency and reducing exhaust pollution.

[0007] Wherein, a first mounting seat for mounting an oxygen sensor is provided on the front section of the exhaust pipe.

[0008] Among them, the muffler cylinder is provided with a second mounting base for installing an oxygen sensor. The second mounting base is placed at the rear ends of the two catalytic converters, and plays a detection role for both catalytic converters, solving the problem in the market that the two oxygen sensors are respectively placed at the front end and the rear end of the first catalyst, and the second oxygen sensor is lacking detection.

[0009] Wherein, the exhaust pipe is connected to the engine air outlet through an interface.

[0010] Wherein, the exhaust pipe is fixedly connected to the engine studs through a flange block by bolts.

[0011] Wherein, a mounting plate is provided on the muffler cylinder, and a through hole is provided on the mounting plate and fixedly connected to the motorcycle bracket by bolts.

[0012] Wherein, the sequential connection is carried out by welding connection combination.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model improves the exhaust component of the motorcycle engine power, and the press-fit catalytic converter makes the installation structure more reliable and increases the service life; an additional oxygen sensor mounting seat is provided to play a detection role for the catalytic converter; the spatial position of the exhaust pipe is optimized, and the exhaust is smoother without affecting the assembly with other parts of the vehicle, while greatly reducing the exhaust resistance and reducing fuel consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the exhaust pipe 1 of the present invention;

[0016] Figure 3 This is a schematic structural diagram of the exhaust pipe 1 of the present invention;

[0017] Figure 4This is a schematic structural diagram of the muffler 2 of the present utility model;

[0018] Figure 5 This is a schematic structural diagram of the muffler 2 of the present utility model;

[0019] Figure 6 This is a schematic diagram of the assembly of the utility model;

[0020] Among them, there are exhaust pipe 1, muffler 2; interface 101, flange block 102, first mounting seat 103, exhaust pipe front section 104, first catalytic converter 105, catalyst sleeve 106, exhaust pipe rear section 107, clamp joint 201, intake pipe 202, second catalytic converter 203, second mounting seat 204, muffler cylinder 205, and mounting plate 206. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figure 1 As shown, the exhaust assembly of the utility model for improving the power of a motorcycle engine comprises an exhaust pipe 1 and a muffler 2;

[0024] like Figure 2 、 3 As shown, the exhaust pipe 1 is welded in sequence by an interface 101 made of SUS304, a flange block 102 made of carbon steel, a first mounting seat 103 made of SUS304, an exhaust pipe front section 104 made of SUS304, a catalyst sleeve 106 made of SUS409L, and an exhaust pipe rear section 107 made of SUS304. A first catalytic converter 105 containing precious metals is provided in the catalyst sleeve 106 for treating exhaust gas. The exhaust pipe front section 104 is provided with a first mounting seat 103 made of SUS304 for mounting an oxygen sensor. The diameter of the exhaust pipe front section 104 increases from thin to thick, and the diameter of the thick section is 1.4 times that of the thin section. The exhaust pipe 1 is connected to the engine outlet through the interface (101), and the exhaust pipe 1 is fixedly connected to the engine studs by bolts through the flange block 102.

[0025] like Figure 4 、 5As shown, the muffler 2 is composed of a clamp joint 201 made of SUS304, an intake pipe 202 made of SUS304, and a muffler cylinder 205 made of SUS304, which are welded together in sequence. The muffler cylinder 205 is provided with a second mounting seat 204 made of SUS304 for mounting an oxygen sensor; the muffler cylinder 205 is provided with a mounting plate 206 made of carbon steel, and the mounting plate 206 is provided with a through hole and fixedly connected to the motorcycle bracket by bolts.

[0026] like Figure 6 The figure shows an assembly diagram of the present invention. After the engine is started, air enters the engine first, and the exhaust gas after combustion is discharged from the engine outlet and enters the exhaust pipe assembly 1. The diameter of the exhaust pipe assembly gradually increases, and the exhaust is smooth. The exhaust gas passes through the catalytic converter 105 for filtration, and the exhaust gas then enters the clamp joint 201 from the rear section 107 of the elbow, is filtered again through the catalytic converter 203, enters the muffler cylinder 205, and is finally discharged into the air.

Claims

1. An exhaust assembly for increasing the power of a motorcycle engine, characterized in that: The exhaust assembly comprises an exhaust pipe (1) and a muffler (2); the exhaust pipe (1) is composed of an interface (101), a flange block (102), an exhaust pipe front section (104), a catalyst sleeve (106) and an exhaust pipe rear section (107) connected in sequence, and a first catalytic converter (105) is arranged in the catalyst sleeve (106); the muffler (2) is composed of a joint (201), an intake pipe (202) and a muffler cylinder (205) connected in sequence, and a second catalytic converter (203) is arranged in the intake pipe (202); the exhaust pipe (1) and the muffler (2) are fixedly connected to the joint (201) through the exhaust pipe rear section (107) using a clamp.

2. The exhaust assembly according to claim 1, characterized in that: A first mounting seat (103) for mounting an oxygen sensor is provided on the front section (104) of the exhaust pipe.

3. The exhaust assembly according to claim 1, wherein: The diameter of the front section (104) of the exhaust pipe increases from thin to thick, and the diameter of the thick section is 1.2 to 1.4 times that of the thin section.

4. The exhaust assembly according to claim 1, wherein: The muffler cylinder (205) is provided with a second mounting seat (204) for mounting an oxygen sensor.

5. The exhaust assembly according to claim 1, wherein: The exhaust pipe (1) is connected to the engine air outlet via an interface (101).

6. The exhaust assembly according to claim 1, wherein: The exhaust pipe (1) is fixedly connected to the engine studs by bolts through a flange block (102).

7. The exhaust assembly according to claim 1, wherein: The muffler cylinder (205) is provided with a mounting plate (206), and the mounting plate (206) is provided with a through hole and fixedly connected to the motorcycle bracket by bolts.

8. The exhaust assembly according to claim 1, wherein: The diameters of the catalyst sleeve (106), the exhaust pipe rear section (107) and the air intake pipe (202) are the same as the diameter of the thick section of the exhaust pipe front section (104).

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