PROBLEM TO BE SOLVED: To provide an exhaust emission control device suitable for a hybrid vehicle of which the engine is operated in an intermittent manner.SOLUTION: The exhaust emission control device comprises: an NOx catalyst containing a carrier consisting of zeolite and Pd carried by the carrier; remaining capacitance acquisition means for acquiring SOC of a battery that supplies power to a motor; NOx adsorption amount estimation means for calculating an estimate ΣNOx of an NOx adsorption amount in the NOx catalyst; and engine operation means which starts operating the engine in response to SOC being a start threshold value or less (S3) and stopping operating the engine in the case where the SOC is equal to or more than an end threshold value and the estimate ΣNOx is an allowable value or less (S5 and S6) thereafter.SELECTED DRAWING: Figure 7

    【課題】エンジンが間欠的に運転されるハイブリッド車両に適した排気浄化装置を提供すること。【解決手段】排気浄化装置は、ゼオライトからなる担体及び当該担体に担持されたPdを有するNOx触媒と、モータに電力を供給するバッテリのSOCを取得する残量取得手段と、NOx触媒におけるNOx吸着量の推定値ΣNOxを算出するNOx吸着量推定手段と、SOCが開始閾値以下になったことに応じてエンジンの運転を開始し(S3)、その後SOCが終了閾値以上でありかつ推定値ΣNOxが許容値以下である場合(S5及びS6)にエンジンの運転を停止する機関運転手段と、を備える。【選択図】図7


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    Title :

    EXHAUST EMISSION CONTROL DEVICE FOR VEHICLE


    Additional title:

    車両の排気浄化装置


    Contributors:

    Publication date :

    2017-02-02


    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 / B01D SEPARATION , Trennen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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