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公开(公告)号：US20060112681A1
公开(公告)日：2006-06-01
申请号：US11264359
申请日：2005-11-01
CPC分类号： F02D41/0275 , F01N3/0807 , F01N3/0842 , F01N3/206 , F01N11/00 , F01N2430/06 , F01N2430/085 , F01N2550/05 , F02D41/1441 , F02D41/22 , F02D41/3836 , F02D41/405 , Y02T10/24 , Y02T10/44 , Y02T10/47
摘要： An exhaust emission control device of an internal combustion engine includes a fuel supply unit provided in a fuel supply passage, for supplying a reducing agent directly to a NOx trap catalytic converter; an addition pressure detection unit for detecting the supply pressure of the reducing agent supplied by the fuel supply unit; and a controller for calculating the amount of NOx adsorbed by the catalytic converter. When the supply pressure of the reducing agent is almost zero, the controller prohibits calculation of NOx adsorption amount depending on the supply of the reducing agent, creates a rich state in a cylinder, carries out calculation of NOx adsorption amount depending on the created rich state, and causes release and reduction of the adsorbed NOx.
摘要翻译： 内燃机的废气排放控制装置包括：燃料供给单元，其设置在燃料供给路径中，用于将还原剂直接供给到NOx捕集催化转化器; 添加压力检测单元，用于检测由燃料供给单元供应的还原剂的供给压力; 以及用于计算催化转化器吸附的NOx的量的控制器。 当还原剂的供给压力几乎为零时，控制器禁止根据还原剂的供给来计算NOx吸附量，在气缸中产生浓的状态，根据所产生的富态进行NOx吸附量的计算 并且引起吸附的NOx的释放和还原。
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2.发明授权公开(公告)号：US07395658B2
公开(公告)日：2008-07-08
申请号：US11234432
申请日：2005-09-23
IPC分类号： F01N3/00
CPC分类号： F02D41/1441 , F01N3/0842 , F01N3/0871 , F01N11/00 , F01N2550/03 , F02D41/1446 , F02D41/187 , F02D2200/0806 , F02D2200/0808 , Y02T10/24 , Y02T10/47
摘要： There is provided an apparatus that estimates the NOx adsorption amount, comprising a NOx trap catalyst that is disposed in an exhaust passage of an engine, for adsorbing NOx in exhaust gases during lean operation and releasing and reducing the adsorbed NOx during rich operation, an operation unit that computes an amount of emission from the catalyst during rich operation by using a map or a polynomial equation that reflects emissions from the catalyst based on the exhaust gas temperature and the exhaust gas flow rate of the exhaust passage and the excess-air factor upstream of the catalyst, and an estimating unit that estimates an amount of adsorption in the NOx trap catalyst from the computed emission amount.
摘要翻译： 提供了一种估计NOx吸附量的装置，其包括设置在发动机的排气通道中的NOx捕集催化剂，用于在稀薄操作期间吸附废气中的NOx，并且在富运行期间释放和减少吸附的NOx，操作 单元，其通过使用基于排气通道的排气温度和排气流量和过量空气系数上游的催化剂的排放的映射或多项式方程式计算在富运行期间来自催化剂的排放量 的催化剂，以及估计单元，其从所计算的排放量估计NOx捕集催化剂中的吸附量。
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3.发明申请公开(公告)号：US20060064968A1
公开(公告)日：2006-03-30
申请号：US11234432
申请日：2005-09-23
CPC分类号： F02D41/1441 , F01N3/0842 , F01N3/0871 , F01N11/00 , F01N2550/03 , F02D41/1446 , F02D41/187 , F02D2200/0806 , F02D2200/0808 , Y02T10/24 , Y02T10/47
摘要： There is provided an apparatus that estimates the NOx adsorption amount, comprising a NOx trap catalyst that is disposed in an exhaust passage of an engine, for adsorbing NOx in exhaust gases during lean operation and releasing and reducing the adsorbed NOx during rich operation, an operation unit that computes an amount of emission from the catalyst during rich operation by using a map or a polynomial equation that reflects emissions from the catalyst based on the exhaust gas temperature and the exhaust gas flow rate of the exhaust passage and the excess-air factor upstream of the catalyst, and an estimating unit that estimates an amount of adsorption in the NOx trap catalyst from the computed emission amount.
摘要翻译： 提供了一种估计NOx吸附量的装置，其包括设置在发动机的排气通道中的NOx捕集催化剂，用于在稀薄操作期间吸附废气中的NOx，并且在富运行期间释放和减少吸附的NOx，操作 单元，其通过使用基于排气通道的排气温度和排气流量和过量空气系数上游的催化剂的排放的映射或多项式方程式计算在富运行期间来自催化剂的排放量 的催化剂，以及估计单元，其从所计算的排放量估计NOx捕集催化剂中的吸附量。
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