Exhaust noise reduction device and vehicle

• Main Authors: GAO HONGLIANG, LIU ZHANKUI, HUANG SHUNFA
• Format: Patent
• Language: Chinese; English
• Published: 03.03.2023
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

The invention relates to an exhaust noise reduction device and a vehicle, the exhaust noise reduction device comprises a shell, a barrel, a tail cover, an air inlet pipe and an exhaust pipe, the tail cover is arranged at one end of the shell, and the inner diameter of the tail cover is gradually reduced in the direction away from the shell to form a funnel-shaped airflow channel. The exhaust noise reduction device and the vehicle are used for reducing noise generated during gas vibration during exhaust, the sectional area of a channel through which sound waves pass is suddenly changed when the sound waves are transmitted everywhere in the exhaust noise reduction device, and therefore reflection and interference of the sound waves are caused to achieve the noise elimination effect. The inner diameter of the tail cover is gradually reduced in the direction away from the shell, so that the tail cover protrudes out of the shell and is matched with the exhaust pipe to form a funnel-shaped airflow channel, airflow