To provide an exhaust system for engines, the exhaust system being capable of suppressing occurrence of booming noises of a vehicle body by suppressing deformations of bent parts of an exhaust pipe, while enhancing engine torque by using exhaust pulsation.SOLUTION: An exhaust system 1 includes: a silencer 14; an exhaust pipe 11; a pre-silencer 16; and a reinforcement member 17. The exhaust pipe 11 comprises: an upstream side exhaust pipe 12 connecting between an engine 20 and the pre-silencer 16; and a downstream side exhaust pipe 13 connecting between the pre-silencer 16 and the silencer 14. The upstream side exhaust pipe 12 has a bent part 12a (part A). The reinforcement member 17 has: fixation parts to be fixed to each stem on an upstream side and a downstream side of the bent part; and a bridge part bridging between the fixation parts. The bridge part of the reinforcement member 17 is arranged inside of bending of the bent part 12a.SELECTED DRAWING: Figure 1

    【課題】排気脈動を用いたエンジンのトルク向上を図りながら、排気管における屈曲部の変形を抑制することで車体におけるこもり音の発生を抑えることができるエンジンの排気装置を提供する。【解決手段】排気装置1は、サイレンサ14と、排気管11と、プリサイレンサ16と、補強部材17とを備える。排気管11は、エンジン20とプリサイレンサ16との間を繋ぐ上流側排気管12と、プリサイレンサ16とサイレンサ14との間を繋ぐ下流側排気管13とにより構成されている。上流側排気管12は、屈曲部12aを有する(A部)。補強部材17は、屈曲部の上流側および下流側の各幹部に固定される固定部と、固定部同士の間を架橋する架橋部とを有する。補強部材17の架橋部は、屈曲部12aにおける屈曲の内側に配設されている。【選択図】図1


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    Title :

    EXHAUST SYSTEM FOR ENGINE


    Additional title:

    エンジンの排気装置


    Contributors:

    Publication date :

    2023-10-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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