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    • 15. 发明公开
    • 촉매 온도 추정 장치 및 촉매 온도 추정 방법
    • 催化剂温度估算装置和催化剂估算方法,排气净化催化剂的温度估算
    • KR1020040077489A
    • 2004-09-04
    • KR1020040012527
    • 2004-02-25
    • 미쯔비시 지도샤 고교 가부시끼가이샤
    • 우에다카츠노리나카모리켄이치후지와라켄한다히데유키
    • F01N11/00
    • F01N9/00F01N3/2006F01N9/005F01N11/005F01N2430/02F01N2430/06F02D41/0235F02D41/123F02D2200/0804Y02T10/26Y02T10/47
    • PURPOSE: A catalyst temperature estimation device and a catalyst estimation method are provided to exactly estimate the temperature of an exhaust gas purification catalyst. CONSTITUTION: A catalyst temperature estimation device comprises a first estimating unit(10) estimating the temperature of exhaust gas exhausted from a combustion chamber of an internal combustion engine as the normal catalyst temperature under abnormal operation of the engine, on the basis of an operation state of the engine; a second estimating unit(20) estimating the representative temperature of an inner wall of a corresponding exhaust pipe to a corresponding exhaust gas purification catalyst from the engine, on the basis of the normal catalyst temperature estimated from the first estimating unit; a third estimating unit(30) estimating the temperature of catalyst inflow exhaust gas flowing into the exhaust gas purification catalyst, on the basis of the normal catalyst temperature and the representative temperature of the inner wall of the exhaust pipe; and a fourth estimating unit(40) estimating the temperature of exhaust gas purification catalyst, on the basis of the temperature of the catalyst inflow exhaust gas.
    • 目的:提供催化剂温度估计装置和催化剂估计方法来精确地估计废气净化催化剂的温度。 催化剂温度估计装置包括:第一估计单元(10),基于操作状态估计从内燃机的燃烧室排出的废气的温度作为发动机异常运行时的正常催化剂温度 的发动机; 第二估计单元,基于从第一估计单元估计出的正常催化剂温度,估计来自发动机的相应排气净化催化剂的相应排气管内壁的代表温度; 基于正常的催化剂温度和排气管的内壁的代表温度,推定流入排气净化催化剂的催化剂流入废气的温度的第三估计单元(30) 以及基于催化剂流入排气的温度估计排气净化催化剂的温度的第四估计单元(40)。