To properly inject a reductant in accordance with a state of an opening/closing member.SOLUTION: An exhaust emission control system includes: an exhaust passage through which an exhaust gas flows from an engine; an injection part 41 for injecting urea water into the exhaust passage in order to clean the exhaust gas; a grille shutter 75 capable of opening and closing a grille opening part through which outside air flows into a periphery of the engine by moving between an open position and a close position; a state determination unit 122 for determining whether the grille shutter 75 is in a failure state of not moving in the close position from the open position; and an injection control unit 123 for prohibiting the injection part 41 from injecting urea water when it is determined that the grille shutter 75 is in the failure state.SELECTED DRAWING: Figure 3

    【課題】開閉部材の状態に応じて還元剤を適切に噴射する。【解決手段】排気浄化システムは、エンジンの排気ガスが流れる排気通路と、排気ガスを浄化するために、排気通路内に尿素水を噴射する噴射部41と、開位置と閉位置の間で移動して、外気がエンジンの周囲へ流入するグリル開口部を開閉可能なグリルシャッター75と、グリルシャッター75が開位置から閉位置へ移動しない故障状態か否かを判定する状態判定部122と、グリルシャッター75が故障状態であると判定された場合には、噴射部41による尿素水の噴射を禁止させる噴射制御部123とを備える。【選択図】図3


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    Title :

    EXHAUST EMISSION CONTROL SYSTEM AND VEHICLE


    Additional title:

    排気浄化システム及び車両


    Contributors:

    Publication date :

    2021-03-25


    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 / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL



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