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公开(公告)号：EP2728135A2
公开(公告)日：2014-05-07
申请号：EP13191155.4
申请日：2013-10-31
IPC分类号： F01N3/20
CPC分类号： B01D53/9495 , F01N3/208 , F01N2560/026 , F01N2610/02 , F01N2610/148 , F01N2900/1402 , F01N2900/1808 , F01N2900/1811 , Y02T10/24
摘要： A method for controlling injection of a reductant into an exhaust system (28) of an internal combustion engine includes determining the temperature and pressure of reductant supplied to a reductant injector (24). The method also determines a maximum reductant flow rate as a function of the reductant temperature and pressure and controls operation of the injector as a function of the maximum reductant flow rate.
摘要翻译： 用于控制将还原剂注入内燃机的排气系统（28）的方法包括确定供给到还原剂喷射器（24）的还原剂的温度和压力。 该方法还确定作为还原剂温度和压力的函数的最大还原剂流速，并且将喷射器的操作控制为最大还原剂流速的函数。
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公开(公告)号：EP2623753A3
公开(公告)日：2015-09-16
申请号：EP13153261.6
申请日：2013-01-30
发明人： Bhasham, Chethana , Miller, Michael James , Seiberlich, Matthew Joseph , Popp, James Rynold , Wyatt, Sean Christopher , McNulty, Michael James , Rodriguez, Jose Antonio , Schipper, Jeremy Grant
CPC分类号： F02D43/04 , F02D41/005 , F02D41/18 , F02D41/182 , F02D2200/0812 , F02D2250/18 , F02D2250/26 , F02D2250/36 , F02D2250/38 , Y02T10/47
摘要： A method of controlling an engine based upon airflow is provided. A request for a desired torque output of the engine is received. A first amount of fuel required to generate the desired torque is retrieving from a memory. An amount of airflow required to combust the fuel required to generate the desired torque at a predefined air/fuel ratio is calculated. A first amount of EGR required to produce a predefined amount of NOx emissions is calculated. The amount of airflow required to the first amount of EGR required is added. The total of the airflow and the first amount of EGR are compared to a volume available in a cylinder. At least one of the first amount of fuel delivered and the first amount of EGR provided is modified when the total of the airflow and the EGR exceeds the total volume available in the cylinder.
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公开(公告)号：EP2623753A2
公开(公告)日：2013-08-07
申请号：EP13153261.6
申请日：2013-01-30
发明人： Bhasham, Chethana , Miller, Michael James , Seiberlich, Matthew Joseph , Popp, James Rynold , Wyatt, Sean Christopher , McNulty, Michael James , Rodriguez, Jose Antonio , Schipper, Jeremy Grant
CPC分类号： F02D43/04 , F02D41/005 , F02D41/18 , F02D41/182 , F02D2200/0812 , F02D2250/18 , F02D2250/26 , F02D2250/36 , F02D2250/38 , Y02T10/47
摘要： A method of controlling an engine based upon airflow is provided. A request for a desired torque output of the engine is received. A first amount of fuel required to generate the desired torque is retrieving from a memory. An amount of airflow required to combust the fuel required to generate the desired torque at a predefined air/fuel ratio is calculated. A first amount of EGR required to produce a predefined amount of NOx emissions is calculated. The amount of airflow required to the first amount of EGR required is added. The total of the airflow and the first amount of EGR are compared to a volume available in a cylinder. At least one of the first amount of fuel delivered and the first amount of EGR provided is modified when the total of the airflow and the EGR exceeds the total volume available in the cylinder.
摘要翻译： 提供了一种基于气流来控制发动机的方法。 接收到对发动机的期望扭矩输出的请求。 从存储器检索产生所需扭矩所需的第一燃料量。 计算在预定的空气/燃料比下燃烧产生所需扭矩所需的燃料所需的气流量。 计算产生预定量的NOx排放量所需的EGR的第一量。 添加所需的第一EGR量所需的气流量。 将气流的总和和第一量的EGR与气缸中可用的体积进行比较。 当气流和EGR的总和超过气缸中可用的总体积时，所传送的第一燃料量和提供的第一量的EGR中的至少一个被改变。
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公开(公告)号：EP2728136A1
公开(公告)日：2014-05-07
申请号：EP13191156.2
申请日：2013-10-31
CPC分类号： F01N3/208 , B01D53/9409 , B01D53/9495 , B01D2251/2062 , F01N3/2066 , F01N11/00 , F01N2550/02 , F01N2560/026 , F01N2560/14 , F01N2900/08 , F01N2900/1402 , F01N2900/1616 , F01N2900/1621 , Y02T10/24 , Y02T10/47
摘要： A method of detecting ammonia in the exhaust system includes detecting a predetermined engine operating condition. Upon detecting the predetermined operating condition, the method determines a first NO x conversion efficiency of a catalyst at a first time T1. The method then injects a reactant into the exhaust upstream of the catalyst and determines a second NO x conversion efficiency at a second time T2. The method then processes the first and second NO x conversion efficiencies to determine whether an ammonia slip condition exists.
摘要翻译： 检测排气系统中的氨的方法包括检测预定的发动机运行状态。 在检测到预定操作条件时，该方法在第一时间T1确定催化剂的第一NO x转换效率。 然后，该方法将反应物注入到催化剂上游的排气中，并在第二时间T2确定第二NO x转化效率。 然后，该方法处理第一和第二NO x转换效率以确定是否存在氨滑移条件。
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