PROBLEM TO BE SOLVED: To provide an exhaust system of an internal combustion engine capable of preventing spreading of heat from a catalytic converter while preventing reduction in emission control performance of the catalytic converter.SOLUTION: In an exhaust system of an internal combustion engine, a heat shielding cover 10 is attached to a catalytic converter 8. In the exhaust system, the heat shielding cover 10 includes: an inside cover 11 covering outer peripheral side faces and both ends in a vertical direction of the catalytic converter 8; and an outside cover 12 covering the outside of the inside cover 11 and forming a cooling passage 13 between the outer cover 12 and the inside cover 11. An inflow port 14 for taking in cooling air to the cooling passage 13 from the front of a vehicle 1 is formed on the outer peripheral side faces 12A of the outside cover 12, and an outflow port 15 for discharging the cooling air taken into the cooling passage 13 is formed on a lower end part of the outside cover 12.

    【課題】触媒コンバータの浄化性能が低下することを防止しつつ、触媒コンバータから熱が拡散されることを防止することができる内燃機関の排気装置を提供することを目的とすること。【解決手段】触媒コンバータ8に遮熱カバー10が取付けられ、遮熱カバー10が、触媒コンバータ8の外周側面および上下方向両端部を覆う内側カバー11と、内側カバー11の外側を覆うとともに、内側カバー11との間に冷却通路13を形成する外側カバー12とを備え、外側カバー12の外周側面12Aに、車両1の前方から冷却通路13に冷却風を取り入れる流入口14を形成し、外側カバー12の下端部に冷却通路13に取り入れられた冷却風を排出する流出口15を形成したものから構成される。【選択図】図6


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    Title :

    EXHAUST SYSTEM OF INTERNAL COMBUSTION ENGINE


    Additional title:

    内燃機関の排気装置


    Contributors:
    OTA HAJIME (author)

    Publication date :

    2015-06-22


    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 / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung



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