EXHAUST DEVICE OF ENGINE AND WORK MACHINE

• Main Authors: YASOSHINA SAYAKA, MURAO ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 26.09.2022
• 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

To reduce exhaust sound of exhaust gas introduced from a pair of introduction ports in a well-balanced manner at an exhaust device including a muffler which houses a catalyst.SOLUTION: An exhaust device 5 of an engine includes: a muffler 33 having multiple muffler chambers 51 to 53 partitioned by partition walls 34 to 36; a communication pipe 37 which is housed in the muffler 33 and penetrates through at least one of the partition walls 34 to 36; and a catalyst 38 which is housed in the muffler 33 and penetrates through at least one partition wall 35. The multiple muffler chambers 51 to 53 include: a pair of first muffler chambers 51 provided with exhaust gas introduction ports; a second muffler chamber 52 which communicates with the pair of first muffler chambers 51 through the communication pipe 37; and a third muffler chamber 53 which communicates with the second muffler chamber 52 through the catalyst 38.SELECTED DRAWING: Figure 5 【課題】触媒を収容するマフラーを備えた排気装置において、一対の導入口から導入される排気ガスの排気音をバランス良く低減する。【解決手段】エンジンの排気装置５は、複数の隔壁３４～３６によって仕切られた複数の消音室５１～５３を有するマフラー３３と、マフラー３３に収容され、少なくとも一つの隔壁３４～３６を貫通する連通管３７と、マフラー３３に収容され、少なくとも一つの隔壁３５を貫通する触媒３８と、を備え、複数の消音室５１～５３は、排気ガスの導入口が設けられた一対の第１消音室５１と、一対の第１消音室５１と連通管３７を介して連通する第２消音室５２と、第２消音室５２と触媒３８を介して連通する第３消音室５３と、を含む。【選択図】 図５