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CONTROLLER AND METHOD FOR CONTROLLING OPERATION OF AN AFTERTREATMENT SYSTEM BASED ON SHORT-TERM AND LONG-TERM CUMULATIVE DEGRADATION ESTIMATES

机译：基于短期和长期累积降解估计的基于短期和长期累积降解控制后处理系统的操作的控制器和方法

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摘要

A controller for controlling operation of an aftertreatment system that is configured to treat constituents of an exhaust gas produced by an engine, the aftertreatment system including a selective catalytic reduction (SCR) catalyst, the controller configured to: generate a short-term cumulative degradation estimate of the SCR catalyst corresponding to reversible degradation of the SCR catalyst due to sulfur and/or hydrocarbons based on a SCR catalyst temperature parameter; generate a long-term cumulative degradation estimate of the SCR catalyst corresponding to thermal aging of the SCR catalyst based on the SCR catalyst temperature parameter; generate a combined degradation estimate of the SCR catalyst based on the short-term cumulative degradation estimate and the long-term cumulative degradation estimate; and adjust an amount of reductant and/or an amount of hydrocarbons inserted into the aftertreatment system based on the combined degradation estimate of the SCR catalyst.

机译：用于控制后处理系统的操作的控制器，其被配置为处理由发动机产生的废气的成分，该控制器包括选择性催化还原（SCR）催化剂，控制器配置为：产生短期累积降级估计基于SCR催化剂温度参数的硫和/或烃引起的SCR催化剂的可逆降解的SCR催化剂对应于SCR催化剂的IC催化剂; 基于SCR催化剂温度参数产生对应于SCR催化剂的热老化的SCR催化剂的长期累积降解估计; 基于短期累积降解估计和长期累积降解估计产生SCR催化剂的组合降解估计; 基于SCR催化剂的组合降解估计，调节插入后处理系统中的还原剂和/或烃的量。

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公开/公告号WO2021183322A1

专利类型
公开/公告日2021-09-16

原文格式PDF
申请/专利权人 CUMMINS EMISSION SOLUTIONS INC.;
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申请/专利号WO2021US20475
发明设计人 CLERC JAMES C;TSCHIMWANG ALAIN NGOY;SASIDHARAN PREMJEE;HALL DAVID C.;JONES BRADLEY V.;GRECA MARC ALEXANDER;RATAN SANTOSH KUMAR;DAYA ROHIL;DADI KARTHIK VENKATA RAMA KRISHNA;GONG JINQIAN;STAEBLER BRYON D.;CORBET TODD A.;
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申请日2021-03-02
分类号F01N9;F01N3;F01N3/04;F01N3/10;F01N3/11;F01N5/04;G06F19;
国家 US
入库时间 2022-08-24 21:07:39

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