Exhaust emission connector of automobile engine and production technology thereof

Abstract

The invention relates to an exhaust emission connector of an automobile engine. The exhaust emission connector of the automobile engine comprises an elbow and a carbon removing and sound absorbing device, wherein the elbow is provided with a gas inlet and a gas outlet, at least one cooling fin is arranged on the outer wall of the elbow, the carbon removing and sound absorbing device communicates with the gas outlet, and a sealing washer is arranged between the carbon removing and sound absorbing device and the gas outlet; the carbon removing and sound absorbing device comprises a carbon removing and sound absorbing part and a threaded connection part, and the threaded connection part is arranged far away from the gas outlet; and the inner wall of the carbon removing and sound absorbing part is covered with a sound absorbing layer, the surface of the sound absorbing layer is covered with a heat-resisting layer, and a carbon removing box and a corona discharger are arranged on the inner wall of the carbon removing and sound absorbing device. According to the exhaust emission connector of the automobile engine, because the carbon removing box and the corona discharger are arranged on the inner wall of the carbon removing and sound absorbing device, static electricity in gas is effectively removed through the corona discharger, the carbon removing effect is improved, carbon deposition in the connector is effectively prevented, the quality of the connector is improved, and the service life of the connector is prolonged.

Description

technical field [0001] The invention relates to an automobile engine exhaust joint and a production process thereof, belonging to the technical field of automobile accessories. Background technique [0002] During the operation of the automobile engine, the high-temperature exhaust gas in the engine cylinder is discharged through the exhaust pipe. Since the exhaust joint of the automobile engine is directly connected to the exhaust pipe, the temperature of the exhaust pipe wall is directly transmitted to the joint; measured by relevant institutions, The temperature of the exhaust pipe wall of a modern supercharged engine can reach above 450 degrees, and the exhaust joint made of ordinary metal materials can only withstand high temperatures below 400 degrees, and cracks are prone to occur when the temperature exceeds 400 degrees. The shape design of the engine exhaust joint is not reasonable enough, the overall strength is low and uneven, especially the concave part has the l...

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Problems solved by technology

[0002] During the operation of the automobile engine, the high-temperature exhaust gas in the engine cylinder is discharged through the exhaust pipe. Since the exhaust joint of the automobile engine is directly connected to the exhaust pipe, the temperature of the exhaust pipe wall is directly transmitted to the joint; measured by relevant institutions, The temperature of the exhaust pipe wall of a modern supercharged engine can reach above 450 degrees, and the exhaust joint made of ordinary metal materials can only withstand high temperatures below 400 degrees, and cracks are prone to occur when the temperature exceeds 400 degrees. The shape design of the engine exhaust joint is not reasonable enough, the overall strength is low and uneven, especially the concave part has the lowest strength, which is prone to cracks and deformation, which will affect its service life and cause the muffler and exhaust manifold connected to it to appear Fault

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