PROBLEM TO BE SOLVED: To provide an exhaust emission control system with a reductant freezing prevention function, capable of reducing initial and running costs by improving the arrangement of a reductant supply pipe.SOLUTION: The exhaust emission control system includes an exhaust emission control device 10 provided on a front side 1a of an engine 1 at its position lower than an upper part 1u of the engine 1 and connected to an exhaust passage 2 of the engine 1 for purifying exhaust gas, a reductant injection device 11 connected to the exhaust emission control device 10 for injecting liquid reductant into the exhaust emission control device 10, a reductant tank 12 provided on a rear side 1b of the engine 1 at its position lower than the upper part 1u of the engine 1 for storing the liquid reductant to be supplied to the reductant injection device 11, and a reductant supply pipe 13 arranged between the reductant tank 12 and the reductant injection device 11 with an upper heat receiving section 13u located above the engine 1 for receiving heat from the engine 1.SELECTED DRAWING: Figure 2

    【課題】還元剤供給配管の配策を改良し、初期コスト及びランニングコストを低減可能な、還元剤凍結防止機能を備えた排気浄化システムを提供すること。【解決手段】エンジン1の前方側1aのエンジン1の上部1uよりも低い位置に設けられ、エンジン1の排気通路2に接続されて排気を浄化する排気浄化装置10と、排気浄化装置10に接続され、排気浄化装置10に液体還元剤を噴射する還元剤噴射装置11と、エンジン1の後方側1bのエンジン1の上部1uよりも低い位置に設けられ、還元剤噴射装置11に供給される液体還元剤を貯留する還元剤タンク12と、還元剤タンク12と還元剤噴射装置11とを結びエンジン1上方に位置してエンジン1からの熱を受ける上方受熱区間13uを有するように配策された還元剤供給配管13と、を備える。【選択図】図2


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    Title :

    EXHAUST EMISSION CONTROL SYSTEM


    Additional title:

    排気浄化システム


    Contributors:
    KOJIMA HIROYUKI (author) / SUZUKI TAKESHI (author) / MITO TAKUYA (author) / INOUE NAOKI (author) / ASANO HIROTO (author) / NISHI KENSUKE (author)

    Publication date :

    2016-08-22


    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



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