EXHAUST NOISE REDUCTION DEVICE

• Main Authors: SHIIGAI HIDEHITO, FUJISAKI KOICHIRO, TAKENAGA NOBUAKI, KOYANAGI SHINICHIRO, SUZUKI KAZUNORI, INOUE RYUTA, MATSUI MASAKI, SANO SHINYA, TAKAGI SHUNSUKE
• Format: Patent
• Language: English; Japanese
• Published: 21.09.2017
• 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

PROBLEM TO BE SOLVED: To provide an exhaust noise reduction device capable of reducing an exhaust sound to occur in the exhaust port of a muffler and easy in maintenance.SOLUTION: An exhaust noise reduction device 20 comprises an exhaust noise reducing unit (or a silencer 30) mounted in an exhaust port 18 of a muffler 16 for reducing the sound which is generated in the exhaust port 18 by an exhaust gas discharged by an internal combustion engine 14. The exhaust noise reduction device may be mounted, if necessary, at a job site or the like needed for noise countermeasures or the like, and can be suitably replaced in accordance with the frequency of a sound source or for an exhaust noise reduction effect demanded.SELECTED DRAWING: Figure 1 【課題】マフラーの排気口で発生する排気音を低減できる、メンテナンスが容易な排気音低減装置を提供する。【解決手段】排気音低減装置２０は、内燃機関１４が排出する排気ガスにより生じる音を低減するマフラー１６の排気口１８に装着され、排気口１８で発生する排気音を低減する排気音低減装置（消音器３０）を有する。排気音低減装置は、騒音対策が必要な工事現場等で必要に応じ装着すれば良く、音源の周波数や、要求される排気音低減効果に合わせて適宜交換できる。【選択図】図１