TWM647552U - Composite exhaust pipe - Google Patents

Abstract

The invention relates to a composite exhaust pipe, which includes: a first pipe, including a first bending part, the first bending part including at least a first bending section; a second pipe, the two ends of which are respectively Connected to the first pipeline, it includes a second bending part, the second bending part includes at least a second bending section and a plurality of through holes; an outer cover covers the second bending part, and the The first pipeline is located outside the outer cover; and a valve mechanism is provided on the first pipeline and between two ends of the second pipeline.

Description

Composite exhaust pipe

The invention relates to an exhaust pipe, in particular to a composite exhaust pipe including multiple pipes.

Generally, vehicles are equipped with an intake/exhaust system connected to the internal combustion engine to supply the gas required for operation into the internal combustion engine and exhaust the exhaust gas produced after combustion to the outside. The fuel is mixed with air in the combustion chamber of the vehicle's internal combustion engine, and the energy generated after the explosion can be used to propel the steam and locomotive forward.

Internal combustion engines in general vehicles have different requirements for exhaust gas, such as low-speed operation and high-speed operation. Among them, under low-speed operation, the exhaust pipe needs to generate appropriate exhaust back pressure to ensure that the internal combustion engine has a large torque output and to prevent the flame from rushing out when the exhaust valve is opened; under high-speed operation, the exhaust Pipe generation needs to provide a higher exhaust gas discharge velocity to improve the efficiency and power of the internal combustion engine.

The conventional exhaust pipe only has a single pipeline, that is, it has a fixed exhaust volume, and cannot meet the needs of low-speed operation and high-speed operation at the same time. If the demand for low-speed operation cannot be met, the torque output will decline significantly, and the flame may even burst out and burn the exhaust valve. If the demand for high-speed operation cannot be met, the combustion exhaust gas cannot be smoothly discharged, seriously reducing the operating efficiency of the internal combustion engine.

Therefore, it is necessary to provide a novel and progressive composite exhaust pipe to solve the above problems.

The main purpose of this creation is to provide a composite exhaust pipe that can provide different exhaust volumes through different exhaust pipes to meet the different back pressure effects required for high-speed and low-speed operation, effectively ensuring the operating efficiency and output horsepower of the internal combustion engine.

In order to achieve the above object, the present invention provides a composite exhaust pipe, which includes: a first pipe including a first bending part, the first bending part including at least a first bending section; a second pipe , its two ends are connected to the first pipeline respectively, including a second bending part, the second bending part includes at least a second bending section and a plurality of through holes; an outer cover to cover the second bending part a folding portion, and the first pipeline is located outside the outer cover; and a valve mechanism is provided on the first pipeline and between two ends of the second pipeline.

The following examples are only used to illustrate the possible implementation modes of this invention, but are not intended to limit the scope of protection sought by this invention, and are explained in advance.

Please refer to FIGS. 1 to 8 , which show an embodiment of the present invention. The composite exhaust pipe 1 of the present invention includes a first pipe 10 , a second pipe 20 , an outer cover 30 and a valve mechanism 40 . The composite exhaust pipe 1 is preferably, but not limited to, made of stainless steel, and is preferably disposed at the end of an exhaust pipe.

The first pipeline 10 includes a first bending portion 11 , and the first bending portion 11 includes at least a first bending section 111 . The two ends of the second pipeline 20 are respectively connected to the first pipeline 10. The second pipeline 20 includes a second bending part 21. The second bending part 21 includes at least a second bending section 211. and a plurality of through holes 212. The outer cover 30 covers the second bending portion 21 , and the first pipeline 10 is located outside the outer cover 30 . The valve mechanism 40 is provided in the first pipeline 10 and between the two ends of the second pipeline 20 . In this way, different exhaust volumes are provided through different exhaust pipes to meet the different back pressure effects required for high-speed and low-speed operation, effectively ensuring the operating efficiency and output horsepower of the internal combustion engine.

In this embodiment, the first bending portion 11 includes two first bending sections 111 and a plurality of first straight sections 112 connecting the two first bending sections 111 , and the plurality of first straight sections 112 are parallel Extending, the second bent portion 21 includes two second bent sections 211 and a plurality of second straight sections 213 connecting the two second bent sections 211. The plurality of second straight sections 213 extend in parallel. Preferably, the first pipeline 10 meanders on a first reference plane P1, the second pipeline 20 meanders on a second reference plane P2, and the first reference plane P1 and the second reference plane P2 is parallel, which is beneficial to the flow of gas and can make the overall volume more compact.

In this embodiment, the diameter of the first pipeline 10 is larger than the diameter of the second pipeline 20 . The two first bending sections 111 and the two second bending sections 211 can provide appropriate exhaust back pressure. Preferably, the outer diameter of the first pipe 10 is 40 mm to 77 mm, and the outer diameter of the second pipe 20 is 32 mm to 77 mm. Through the operation of the valve mechanism 40 , the gas can be switched to flow through the first pipeline 10 or the second pipeline 20 . When running at high speed, the gas system circulates through the first pipe 10 with a larger diameter to smoothly discharge a larger amount of combustion exhaust gas, while maintaining a larger torque and making the exhaust sound more saturated and thicker; when During low-speed operation, the gas system circulates through the second pipeline 20 with a smaller diameter to achieve a relatively high and appropriate back pressure to generate high torque output.

The plurality of through holes 212 are distributed in the portion of the second bending portion 21 other than the at least one second bending section 211 and the two through sections 214 . Specifically, the plurality of through holes 212 are distributed in the plurality of third bending sections 211 and 214 . Two straight sections 213. The two penetration sections 214 pass through the outer cover 30 and are closedly connected to the outer peripheral surface of the outer cover 30, which can more effectively guide and discharge the gas in the outer cover 30. Preferably, the inner surface of the outer cover 30 is covered with a sound-absorbing cotton layer 50 . The plurality of through holes 212 allow part of the gas to disperse and reduce the exhaust pressure. The silencing cotton layer 50 further absorbs sound and reduces vibration to reduce the noise and vibration generated by the exhaust.

The at least one first bending section 111 and the at least one second bending section 211 are each formed by bending two pieces respectively and then consolidating the outer peripheral overlapping edges 113, 215 and the middle overlapping edges 114, 216, which is easy to manufacture. Quickly; at least one of the at least one first bending section 111 and the at least one second bending section 211 is provided with an arc-shaped flange 115, 217 on the outside, which can increase the structural strength. The plurality of first straight sections 112 of the first bent portion 11 are inserted into the two first bent sections 111 and are sealed and connected through welding or other processes; the plurality of second straight sections of the second bent portion 21 213 is inserted into the two second bending sections 211 and is sealed and connected through welding or other processes. The plurality of first straight sections 112 and the two first bent sections 111 are manufactured and connected respectively, and the plurality of second straight sections 213 and the two second bent sections 211 are manufactured and connected respectively, with the selection of components and materials. And the combination of diversity, quick and convenient assembly function. It can be understood that the first pipeline 10 and the second pipeline 20 can also be formed by a single integrally formed single pipe extending in a meandering manner.

Preferably, at least one mounting bracket 60 for connecting to an installation base is connected to at least one of the first pipeline 10 and the second pipeline 20 . In this embodiment, two mounting brackets 60 are connected to the first pipeline 10. The two mounting brackets 60 are located outside the two ends of the second pipeline 20, so that they can be held easily, quickly and stably. The composite exhaust pipe 1.

1: Composite exhaust pipe 10:First pipeline 11: First bending part 111: First bending section 112: The first straight section 113: Peripheral overlapping edges 114: Middle overlapping edge 115:Arc flange 20:Second pipeline 21: Second bending part 211: Second bending section 212:Through hole 213: Second straight section 214: Wearing section 215: Peripheral overlapping edge 216: Middle overlapping edge 217:Arc flange 30:Outer cover 40: Valve mechanism 50: Silencer cotton layer 60:Mounting rack P1: first reference plane P2: Second reference plane

Figure 1 is a perspective view of an embodiment of this invention. Figure 2 is a perspective view from another perspective of an embodiment of the present invention. Figure 3 is an exploded view of an embodiment of this invention. Figure 4 is a cross-sectional view of an embodiment of the present invention. Figure 5 is a partial perspective view of the first bending portion of an embodiment of the present invention. Figure 6 is an exploded view of Figure 5. Figure 7 is a partial perspective view of the second bending portion of an embodiment of the present invention. Figure 8 is an exploded view of Figure 7.

1: Composite exhaust pipe

10:First pipeline

111: First bending section

20:Second pipeline

30:Outer cover

40: Valve mechanism

60:Mounting rack

Claims (10)

A composite exhaust pipe includes: a first pipe, including a first bending part, the first bending part including at least a first bending section; a second pipe, the two ends of which are respectively connected to the The first pipeline includes a second bending part, the second bending part includes at least a second bending section and a plurality of through holes; an outer cover covers the second bending part, and the first pipe The pipeline is located outside the outer cover; and a valve mechanism is provided on the first pipeline and between the two ends of the second pipeline. The composite exhaust pipe according to claim 1, wherein the first bending part includes two first bending sections, and the second bending part includes two second bending sections. The composite exhaust pipe according to claim 1, wherein the outer diameter of the first pipe is 40 mm to 77 mm, and the outer diameter of the second pipe is 32 mm to 77 mm. The composite exhaust pipe according to claim 1, wherein the plurality of through holes are distributed in the portion of the second bending portion other than the at least one second bending section. The composite exhaust pipe as claimed in claim 1, wherein the first pipe meanders on a first reference plane, the second pipe meanders on a second reference plane, the first reference plane and the The second reference plane is parallel. The composite exhaust pipe according to claim 1, wherein the diameter of the first pipe is larger than the diameter of the second pipe. The composite exhaust pipe according to claim 1, wherein at least one of the first pipe and the second pipe is further connected to at least one mounting bracket for connecting to an installation base. The composite exhaust pipe according to claim 5, wherein the first bent portion includes two first bent sections and a plurality of first straight sections connecting the two first bent sections, and the plurality of first straight sections segments extend parallel; the The second bent portion includes two second bent sections and a plurality of second straight sections connecting the two second bent sections. The plurality of second straight sections extend in parallel; the plurality of through holes are distributed in the plurality of second straight sections. The second straight section; the plurality of through holes are distributed in the second bending portion other than the at least one second bending section and the two penetration sections, the two penetration sections pass through the outer cover and the outer peripheral surface It is closedly connected to the outer cover; the diameter of the first pipeline is larger than the diameter of the second pipeline; the first pipeline is also connected to two mounting brackets for connecting to an installation base, and the two mounting brackets are located on the Outside the two ends of the second pipeline, the inner surface of the outer cover is covered with a sound-absorbing cotton layer. The composite exhaust pipe according to any one of claims 1 to 8, wherein the at least one first bending section and the at least one second bending section are each formed by bending two pieces respectively, and then overlap the edges on the outer periphery and The overlapping edges in the middle are consolidated. The composite exhaust pipe according to claim 9, wherein at least one of the at least one first bent section and the at least one second bent section is provided with an arc-shaped flange protruding from the outside.

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