CN2224919Y - Car exhaust pipe - Google Patents

Abstract

The invention discloses an automobile exhaust pipe, comprising a porous pipe and an outer pipe sleeved on the outside of the porous pipe. The porous pipe is a pipe body with a large diameter at the front section and a small diameter at the rear section and a plurality of through holes arranged on the circumferential surface. The enlarged portion at the front end is connected with the automobile tail pipe. The front section and the rear section respectively have an inlet and outlet hole ring fixedly connected to the two ends of the outer pipe. The inlet and outlet holes are provided with a plurality of through holes. At least one annular hole structure is respectively arranged along the annular surface at both ends of the outer pipe, so that the outside air can be quickly mixed with the exhaust gas in the porous pipe to dilute the exhaust gas, reduce the engine temperature, and prevent the generation of scale in the exhaust pipe.

Description

Car exhaust pipe

The utility model relates to an automobile exhaust pipe, in particular to an automobile exhaust pipe which utilizes external high-speed air suction to dilute exhaust gas in the main exhaust pipe, accelerate exhaust gas removal, and reduce engine temperature and fouling.

When the fuel is burned in the engine, the temperature of the mixture will exceed 4000°F after combustion, which will generate a huge amount of heat, which needs to be discharged through the exhaust pipe. Because the temperature is too high, the parts of the engine such as the piston , Piston rings, intake and exhaust valves, cylinder walls and other original lubricating parts of the engine oil are damaged, resulting in the engine can not get the normal lubrication effect, so the exhaust system plays a very important role in the power system of the vehicle. The exhaust gas from fuel combustion is discharged through the exhaust manifold. Depending on the type of engine, the exhaust manifold can be bolted to the cylinder or cylinder block. The curvature of the manifold must be gentle, and there must be no back pressure. , there will be an air block, and then it will be discharged through the tailpipe. There is no power to accelerate the emission of exhaust gas, and the exhaust gas cannot be discharged quickly, so it often accumulates in the exhaust pipe, causing serious carbon deposition in the exhaust pipe and hindering the discharge of exhaust gas. cause the engine to overheat.

The purpose of this utility model is to provide an automobile exhaust pipe, which can attract the outside air to fully mix when the exhaust gas is discharged, not only can dilute the exhaust gas, reduce the temperature of the engine, but also prevent the generation of fouling in the exhaust pipe.

The utility model is characterized in that: the automobile exhaust pipe includes a porous pipe with different thicknesses in the front and rear sections and an outer pipe sleeved on the outside of the porous pipe. It is firmly connected with both ends of the outer tube, so that the outside air enters the inside of the outer tube through the perforation on the air inlet ring, and the exhaust gas in the porous tube is fully mixed, and then enters the area of the smaller diameter of the porous tube, so that the outside air has The larger space can absorb the exhaust gas inside the porous tube and produce noise reduction. The diluted exhaust gas is discharged out of the tube at an accelerated rate through the perforation of the air outlet ring and the ring hole structure on the outer tube ring, so as to achieve the elimination of exhaust gas and accelerate the exhaust. purpose of anger. Moreover, the front end of the porous tube forms an enlarged part. When the car is running, a large amount of outside air can smoothly enter the tube, and the diameter of the tail end is reduced, so that the air and exhaust gas are quickly mixed and compressed to accelerate the discharge to the outside. Each is equipped with a ring hole structure, which helps the outside air to enter and discharge, so as to reduce the effect of exhaust gas.

The automobile exhaust pipe of the present utility model is described in detail below by preferred embodiment and accompanying drawing, in the accompanying drawing:

Fig. 1 is an exploded perspective view of a preferred embodiment of the present invention.

Fig. 2 is a combined three-dimensional appearance view of a preferred embodiment of the utility model.

Fig. 3 is a combined cross-sectional schematic view of a preferred embodiment of the present invention.

Fig. 4 is a schematic diagram of installation of a preferred embodiment of the present invention.

As shown in FIG. 1 , the automobile exhaust pipe of the preferred embodiment of the present invention includes a porous pipe 10 and an outer pipe 20 .

The pipe body of the porous pipe 10 is divided into front and rear sections 11 and 12, the front section 11 has a thicker pipe diameter, the rear section 12 has a thinner pipe diameter, and a plurality of through holes 16 are arranged along the ring surface, and the tail end of the front section 11 forms An enlarged portion 13, which can be connected with the automobile tailpipe 30 (Fig. 4), and a disc-shaped air inlet and outlet ring 14, 15 is respectively fixed outside the front and rear sections 11, 12 two ends. 1. A plurality of perforations 141, 151 are provided on the air outlet rings 14, 15.

The outer tube 20 is in the shape of a hollow cylinder, with a flared front end and a constricted rear end. When the car is running, a large amount of outside air can smoothly enter the tube, and the diameter of the rear end can be narrowed so that the air and exhaust gas can quickly flow into the tube. Mixing, this shape helps air and exhaust mix and accelerates the exhaust action. The outer tube 20 is sleeved on the outside of the porous tube 10, and the inner ring surface is welded and fixed to the periphery of the air inlet and outlet rings 14, 15. The front and rear ends of the outer tube 20 are each provided with at least one ring hole structure along the ring surface. 21, 22, help outside air to enter and discharge, so as to reduce the effect of exhaust gas.

As shown in Figures 2, 3, and 4, the enlarged portion 13 of the porous pipe 10 of the exhaust pipe protrudes from the outside of the outer pipe 20 for connecting with the tailpipe 30 of the automobile, and the front and rear ends of the outer pipe 20 are used to connect with the inlet pipe. , the function of the air outlet rings 14, 15 being welded together, plus the ring structure 21, 22 set at the two ends of the outer tube 20, when the automobile engine is running, the exhaust gas passes through the porous tube 10, and the outside air utilizes the front end of the outer tube 20 The perforation 141 of the air intake hole ring 14 enters the inside of the outer pipe 10, and is just located in the thick pipe part of the front section 11 of the porous pipe 10. The air can attract exhaust gas and fully mix it. In the thin tube part, air and exhaust gas are mixed in a larger space to produce noise reduction, and then the perforation 151 of the air outlet ring 15 in the rear section 12 and the ring hole structure 22 at the rear end of the outer tube 20 are discharged to the outside, while the porous tube 10 The remaining exhaust gas inside is also accelerated out of the pipe. As for the two annular hole structures 21, 22 at the front and rear ends of the outer tube 20, it is helpful for the outside air to enter and discharge.

In summary, the automobile exhaust pipe of the present utility model uses the inlet and outlet hole rings 14, 15 of the porous pipe 10 to weld with the outer pipe 20, so that the outside air enters the inside of the outer pipe 20 and fully mixes with the exhaust gas in the porous pipe 10. , and utilize the pipe diameter reduction at the end of the outer pipe 20 to accelerate the diluted exhaust gas out of the pipe to achieve the functions of exhaust gas removal, lower engine temperature, and accelerated exhaust.

Claims (1)

1. An automobile exhaust pipe, comprising a porous pipe and an outer pipe sleeved on the outside of the porous pipe. The front end of the porous pipe has an enlarged part connected with the tailpipe of the automobile. It is characterized in that: The porous tube is divided into front and rear sections, and the front and rear sections respectively have an inlet and an outlet hole ring affixed to both ends of the outer tube. The front section of the porous tube has a larger diameter, and the rear section The section pipe diameter is small, the inlet and outlet hole rings are provided with a plurality of perforations, and the peripheral surface of the porous pipe ring is provided with a plurality of through holes; Both ends of the outer tube are respectively provided with at least one annular hole structure along the annular surface.

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