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    • 85. 发明公开
    • 희박 혼합 엔진의 배기 가스 시스템에서의 질소 산화물 저장 촉매 탈황 방법
    • 硝酸混合发动机排气系统中氮氧化物储存催化剂的脱硫方法
    • KR1020090094452A
    • 2009-09-07
    • KR1020097013362
    • 2007-12-19
    • 우미코레 아게 운트 코 카게
    • 에크호프,슈테판필립,주잔네뮐러,빌프리트크로이처,토마스
    • F01N3/08F01N3/20F01N13/04
    • F02D41/028F01N3/0814F01N3/0842F01N3/0885F01N3/101F01N3/106F01N3/2033F01N13/009F01N13/0093F01N13/04F01N13/107F01N2430/06F01N2430/08F01N2430/085F01N2560/025F01N2560/14F02D41/0082Y02T10/22Y02T10/26
    • Lean mix engines require an exhaust gas system having nitrogen oxide storage catalysts for the removal of nitrogen oxides from the exhaust gases. If the lean mix engine is operated using exhaust gas comprising sulfur, the storage catalysts must be desulfurized from time to time. The desulfurization process has an inherent risk of high emissions of harmful substances. These emissions can be prevented if the cylinders of the lean mix engine are combined in two groups, which emit their exhaust gas in two associated exhaust gas lines, in which at least one nitrogen oxide storage catalyst is disposed. The two exhaust gas lines are combined to a common exhaust gas line behind the storage catalysts, the line comprising a catalyst, which has a three-way function under stoichiometric conditions. The two nitrogen oxide storage catalysts are desulfurized time-shifted from each other. While rich exhaust gas having a high temperature flows through the one storage catalyst for the desulfurization process, lean exhaust gas flows through the second storage catalyst such that the combined exhaust gas has a stoichiometric composition during the entire desulfurization duration. Under the stoichiometric conditions, the catalyst having a three-way function is capable of converting hydrocarbons, carbon monoxide, and nitrogen oxides into harmless components.
    • 精益混合发动机需要具有用于从废气中除去氮氧化物的氮氧化物储存催化剂的废气系统。 如果使用包含硫的废气来操作稀混合发动机,则必须不时地将储存催化剂脱硫。 脱硫过程具有高有害物质排放的固有风险。 如果将稀混合发动机的气缸组合成两组,这两个组在两个相关联的排气管线中排放废气,则可以防止这些排放,其中设置有至少一个氮氧化物储存催化剂。 这两条废气管路与储存催化剂后面的普通废气管线组合,该管路包括催化剂,催化剂在化学计量条件下具有三通功能。 两种氮氧化物储存催化剂彼此脱硫脱硫。 虽然具有高温的富废气流过用于脱硫过程的一个储存催化剂,但是贫废气流过第二储存催化剂,使得组合废气在整个脱硫持续时间内具有化学计量组成。 在化学计量条件下,具有三向功能的催化剂能够将烃,一氧化碳和氮氧化物转化为无害成分。
    • 89. 发明公开
    • 차량용 삼원 촉매 시스템
    • 用于车辆的催化转换器系统
    • KR1020030021453A
    • 2003-03-15
    • KR1020010054730
    • 2001-09-06
    • 현대자동차주식회사
    • 장한수
    • F01N3/20
    • Y02A50/2322F01N3/2803F01N3/101F01N13/1838F01N2450/22F01N2450/24F01N2510/06F01N2530/22
    • PURPOSE: A catalytic converter system used in a vehicle is provided to prevent a carrier from being damaged and to reduce back pressure by pressing the carrier contained in a can to an exhaust manifold. CONSTITUTION: A catalytic converter system includes a cylindrical can(1), in which a carrier(2) coated with precious metal is contained. One end of the cylindrical can(1) is welded to an exhaust manifold(EM). The other end of the cylindrical can(1) is welded to a flange(7) connected to a front pipe(FP) through a bolt. An inner cone(5) is provided at a lower portion of the carrier(2) contained in the cylindrical can(1). The inner cone(5) is elastically supported by an elastic member(8). The inner cone(5) has a relatively large resting terminal(5a). Outer diameters of the carrier(2) and the inner cone(5) are smaller than an inner diameter of the cylindrical can(1).
    • 目的:提供一种用于车辆中的催化转化器系统,以防止载体受损,并通过将包含在罐中的载体压向排气歧管来减少背压。 构成:催化转化器系统包括圆筒形罐(1),其中包含涂有贵金属的载体(2)。 圆筒形罐(1)的一端焊接到排气歧管(EM)。 圆柱形罐(1)的另一端通过螺栓焊接到与前管(FP)连接的凸缘(7)上。 内圆锥体(5)设置在容纳在圆筒形罐(1)中的载体(2)的下部。 内锥体(5)由弹性构件(8)弹性支撑。 内锥(5)具有相对较大的静止端(5a)。 载体(2)和内锥体(5)的外径小于圆筒形罐(1)的内径。
    • 90. 发明公开
    • 엔진의 배기정화장치
    • 发动机排气净化装置
    • KR1020020005687A
    • 2002-01-17
    • KR1020017013221
    • 2001-02-16
    • 닛산 지도우샤 가부시키가이샤
    • 나카무라다케시
    • F02D41/02
    • F02D41/1441F01N3/0814F01N3/0835F01N3/101F01N11/007F01N13/009F01N13/0093F01N2550/02F01N2570/16F02D41/0295F02D41/123F02D41/126F02D41/187F02D2200/0804F02D2200/0814F02D2200/0816Y02T10/22Y02T10/47
    • 제1 삼원촉매(3a)로유입하는배기의공연비를검출하는프론트 A/F 센서(4)와, 제1 삼원촉매에서유출하는배기의산소농도를검출하는제1 후방산소센서(5a)와, 제1 삼원촉매의하류측에개장된제2 삼원촉매(3b)와, 제2 삼원촉매(3a)에서유출하는배기의산소농도를검출하는제2 후방산소센서(5b)를구비한다. 정상운전시는상기검출공연비를기초로제1 삼원촉매(3a)의산소흡수량을연산하고, 연산된산소흡수량에기초로제1 삼원촉매(3a)의산소흡수량이목표량이되도록엔진의공연비를제어한다. 단, 연료차단등에의해희박한공연비에서운전후는제2 후방산소센서(5b)에의해검출한산소농도에기초로, 각촉매의산소흡수량이목표량이되도록공연비를제어한다.
    • 为了维持高水平的下游催化剂​​的转化效率,提供了一种排气净化装置,其包括设置在发动机排气管中的第一催化剂,设置在所述第一催化剂下游的第二催化剂,前A / 检测流入所述第一催化剂的空燃比的传感器,检测所述空燃比或从所述第二催化剂流出的氧浓度的后A / F或氧传感器,以及被编程为计算氧气的微处理器 所述第一催化剂的储存量基于由所述前A / F传感器检测的所述空燃比,基于所述计算的氧气储存量来控制发动机的空燃比,使得所述第一催化剂的所述储氧量 是目标量,并且将目标空燃比设定为预定的固定浓空燃比,直到由所述第二后A / F或氧传感器检测到的空燃比或氧浓度变得比预定值更丰富 在预定的稀薄状态下运行后的值。