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1. 发明授权

US10352225B2 Method and system for diagnosing deterioration of exhaust emission control catalyst 有权
公开(公告)号：US10352225B2
公开(公告)日：2019-07-16
申请号：US14616997
申请日：2015-02-09
申请人： Mazda Motor Corporation
发明人： Hiroyuki Takita , Mitsuharu Kaura , Susumu Takano , Yosuke Honda , Hidekazu Kashiro
IPC分类号： F01N11/00 , F01N3/08 , F01N3/10 , F02B37/00 , F02B29/04 , F02M26/05 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/25 , F02M26/24
摘要： A method of diagnosing deterioration of an exhaust emission control catalyst is provided. The catalyst includes an HC (hydrocarbon) adsorbing part and an oxidation catalyst part. The method includes estimating that an HC discharge amount discharged from the HC adsorbing part is larger than a first value, detecting a parameter relating to a reaction heat of the exhaust emission control catalyst, and diagnosing that the exhaust emission control catalyst is deteriorated when the detected parameter indicates a temperature value lower than a predetermined threshold. The deterioration diagnosis is performed under a first condition that the HC discharge amount is estimated to be larger than the first value.

2. 发明申请

US20150247441A1 METHOD AND SYSTEM FOR DIAGNOSING DETERIORATION OF EXHAUST EMISSION CONTROL CATALYST 审中-公开
标题翻译：用于诊断排气控制催化剂检测的方法和系统
公开(公告)号：US20150247441A1
公开(公告)日：2015-09-03
申请号：US14616997
申请日：2015-02-09
申请人： Mazda Motor Corporation
发明人： Hiroyuki Takita , Mitsuharu Kaura , Susumu Takano , Yosuke Honda , Hidekazu Kashiro
IPC分类号： F01N11/00
CPC分类号： F01N11/005 , F01N3/0835 , F01N3/103 , F01N11/00 , F01N2430/06 , F01N2550/02 , F01N2550/03 , F02B29/0406 , F02B37/004 , F02M26/05 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/24 , F02M26/25 , Y02T10/144 , Y02T10/20 , Y02T10/47
摘要： A method of diagnosing deterioration of an exhaust emission control catalyst is provided. The catalyst includes an HC (hydrocarbon) adsorbing part and an oxidation catalyst part. The method includes estimating that an HC discharge amount discharged from the HC adsorbing part is larger than a first value, detecting a parameter relating to a reaction heat of the exhaust emission control catalyst, and diagnosing that the exhaust emission control catalyst is deteriorated when the detected parameter indicates a temperature value lower than a predetermined threshold. The deterioration diagnosis is performed under a first condition that the HC discharge amount is estimated to be larger than the first value.
摘要翻译：提供了一种诊断废气排放控制催化剂的劣化的方法。催化剂包括HC（烃）吸附部分和氧化催化剂部分。该方法包括：从HC吸附部排出的HC排出量大于第一值，检测与废气排放控制催化剂的反应热有关的参数，并且在检测到废气排放控制催化剂劣化时，参数表示低于预定阈值的温度值。劣化诊断在HC排放量被估计为大于第一值的第一条件下进行。

3. 发明申请

US20150090020A1 METHOD AND SYSTEM FOR DIAGNOSING DETERIORATION OF EXHAUST EMISSION CONTROL CATALYST 审中-公开
标题翻译：用于诊断排气控制催化剂检测的方法和系统
公开(公告)号：US20150090020A1
公开(公告)日：2015-04-02
申请号：US14485308
申请日：2014-09-12
申请人： Mazda Motor Corporation
发明人： Hiroyuki Takita , Mitsuharu Kaura , Susumu Takano , Yosuke Honda , Hidekazu Kashiro
IPC分类号： F01N11/00 , G01M15/10
CPC分类号： F01N11/002 , F01N2550/02 , F01N2560/06 , F01N2570/12 , F01N2900/0416 , F01N2900/1404 , F01N2900/1406 , Y02T10/47
摘要： A deterioration diagnosing system for an exhaust emission control catalyst of an engine is provided. The catalyst includes an HC adsorbing part and an oxidation catalyst part. The system includes an actual exhaust-emission-control-catalyst temperature parameter detecting module for detecting a parameter correlating with an actual exhaust-emission-control-catalyst temperature. The catalyst also includes a deterioration determining module for receiving a detection value from the actual exhaust-emission-control-catalyst temperature parameter detecting module when predetermined diagnosis executing conditions are met, and determining that the exhaust emission control catalyst is deteriorated when the detection value is smaller than a predetermined diagnostic temperature parameter threshold. The catalyst also includes an HC discharge amount calculating module for calculating an amount of discharging HC from the HC adsorbing part. The catalyst also includes a false deterioration determination preventing module for receiving a signal from the HC discharge amount calculating module and preventing false determination of the deterioration determining module.
摘要翻译：提供了一种用于发动机废气排放控制催化剂的劣化诊断系统。催化剂包括HC吸附部分和氧化催化剂部分。该系统包括用于检测与实际排气 - 排放控制 - 催化剂温度相关的参数的实际排气 - 排放 - 控制 - 催化剂温度参数检测模块。催化剂还包括劣化判定模块，用于在满足预定的诊断执行条件时从实际排气 - 排放控制催化剂温度参数检测模块接收检测值，并且当检测值为小于预定诊断温度参数阈值。催化剂还包括用于计算HC吸附部分的HC排出量的HC排出量计算模块。催化剂还包括用于从HC排出量计算模块接收信号并防止劣化判定模块的错误判定的错误劣化判定模块。

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