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11.发明授权Method for operating an internal combustion engine and device for implementing the method 有权用于操作内燃机的方法和用于实施该方法的装置公开(公告)号：US08020374B2
公开(公告)日：2011-09-20
申请号：US12066231
申请日：2006-08-01
申请人： Christian Walz , Matthias Loehr , Andreas Rudolph
发明人： Christian Walz , Matthias Loehr , Andreas Rudolph
IPC分类号： F01N3/00
CPC分类号： F01N3/208 , B01D53/90 , B01D53/9409 , B01D53/9495 , F01N9/00 , F01N9/005 , F01N2390/02 , F01N2560/026 , F01N2560/06 , F01N2560/07 , F01N2560/14 , F01N2610/146 , F01N2900/0408 , F01N2900/14 , F01N2900/1622 , F01N2900/1814 , Y02T10/24 , Y02T10/47
摘要： invention relates to a method for operating an internal combustion engine, in the exhaust gas section of which is arranged at least one SCR catalytic converter, which is hit with a reagent that contributes to NOx conversion in the SCR catalytic converter, and to a device for implementing the method. At least one measure is calculated for the NOx concentration downstream after the SCR catalytic converter. An NOx sensor, which is arranged downstream after the SCR catalytic converter, generates an exhaust gas sensor signal which corresponds to at least the NOx concentration and optionally, as a result of cross sensitivity, to a reagent slip. A reagent signal, which determines the dosage of reagent, is influenced by a correction signal as a function of the difference and as a function of a measure for the temperature of the SCR catalytic converter.
摘要翻译： 本发明涉及一种用于操作内燃机的方法，其排气部分布置有至少一个SCR催化转化器，其被SCR催化转化器中有助于NOx转化的试剂撞击，并且用于 实施该方法。 在SCR催化转化器之后，对下游的NOx浓度计算至少一个量度。 布置在SCR催化转化器后面的NOx传感器产生对应于至少NOx浓度的排气传感器信号，并且可选地，作为交叉灵敏度的结果，产生对试剂滑移的排气传感器信号。 确定试剂剂量的试剂信号受作为差异的函数的校正信号和作为SCR催化转化器的温度的测量的函数的影响。
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12.发明申请METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE AND DEVICE FOR CARRYING OUT THE METHOD 有权用于操作内燃机的方法和用于实施该方法的装置公开(公告)号：US20090199541A1
公开(公告)日：2009-08-13
申请号：US12066223
申请日：2006-07-31
申请人： Christian Walz , Matthias Loehr , Andreas Rudolph
发明人： Christian Walz , Matthias Loehr , Andreas Rudolph
CPC分类号： F01N3/208 , F01N2560/026 , F01N2560/06 , F01N2610/02 , F01N2610/146 , F01N2900/0402 , F01N2900/08 , F01N2900/14 , F01N2900/1814 , Y02T10/24
摘要： A method for operating an internal combustion engine in whose exhaust gas region at least one SCR catalytic converter is arranged, a reagent which contributes to NOx conversion in the SCR catalytic converter being applied to said SCR catalytic converter, and a device for carrying out the method are proposed. A measure for the NOx current which occurs downstream of the SCR catalytic converter is both calculated and measured with an NOx sensor which has lateral sensitivity to the reagent. The difference between the calculated measure and the measured measure of the NOx current is determined. A reagent signal which defines the metering of the reagent is influenced as a function of the difference. Plausibility checking is provided, during which the reagent quantity which is metered in a predefined time period and the reagent quantity which is converted in the SCR catalytic converter and/or the converted NOx quantity are compared with one another. When a deviation is detected, a correction signal which also influences the reagent signal is made available.
摘要翻译： 一种用于操作其排气区域中至少一个SCR催化转化器的内燃机的方法，用于施加到所述SCR催化转化器的SCR催化转化器中的有助于NOx转化的试剂，以及用于执行该方法的装置 被提出。 利用对试剂具有侧向敏感性的NOx传感器来计算和测量在SCR催化转化器下游发生的NOx电流的测量。 确定计算的测量值与测量的NOx电流的测量值之间的差异。 定义试剂计量的试剂信号作为差异的函数受到影响。 提供了可靠性检查，其中在预定时间段内计量的试剂量和SCR催化转化器中转换的试剂量和/或转化的NOx量彼此进行比较。 当检测到偏差时，也会影响也影响试剂信号的校正信号。
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13.发明授权公开(公告)号：US09016049B2
公开(公告)日：2015-04-28
申请号：US12889161
申请日：2010-09-23
CPC分类号： F01N9/00 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N2430/00 , F01N2900/1602 , F02D41/027 , F02D41/1446 , F02D41/1454 , F02D2041/0265 , F02D2200/0802 , F02D2200/0804 , Y02T10/47
摘要： A method is presented for controlling an internal combustion engine (10), which includes an exhaust gas system (12) having an exhaust gas aftertreatment component (22) that temporarily stores exhaust gas constituents and can be regenerated, wherein an expected value for a temperature of the exhaust gas aftertreatment component (22) is formed as a function of an increase in temperature, which arises as a result of exothermal reactions during the duration of an operating mode (BA2) of the internal combustion engine (10) which is set for the regeneration of said exhaust gas aftertreatment component (22), wherein the expected value is compared with an upper threshold value (T_max) and the control of said internal combustion engine (10) is changed when the threshold value (T_max) is exceeded, such that an expected value formed while taking the changed control into account does not exceed said threshold value (T_max). The method is thereby characterized in that a direction of change of a current temperature of said exhaust gas aftertreatment component (22) is taken into account when forming the expected value.
摘要翻译： 提出了一种用于控制内燃机（10）的方法，该内燃机（10）包括具有临时存储排气成分并可再生的废气后处理部件（22）的排气系统（12），其中温度的期望值 废气后处理部件（22）的形成是随着内燃机（10）的操作模式（BA2）持续期间由于放热反应而引起的温度升高的函数，该内燃机设定为 所述废气后处理部件（22）的再生，其中，当超过所述阈值（T_max）时，所述预期值与上限阈值（T_max）进行比较，并且所述内燃机（10）的控制被改变， 在考虑改变的控制时形成的期望值不超过所述阈值（T_max）。 因此，该方法的特征在于，当形成预期值时，考虑所述废气后处理部件（22）的当前温度的变化方向。
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14.发明申请公开(公告)号：US20110072785A1
公开(公告)日：2011-03-31
申请号：US12889161
申请日：2010-09-23
IPC分类号： F01N3/00
CPC分类号： F01N9/00 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N2430/00 , F01N2900/1602 , F02D41/027 , F02D41/1446 , F02D41/1454 , F02D2041/0265 , F02D2200/0802 , F02D2200/0804 , Y02T10/47
摘要： A method is presented for controlling an internal combustion engine (10), which includes an exhaust gas system (12) having an exhaust gas aftertreatment component (22) that temporarily stores exhaust gas constituents and can be regenerated, wherein an expected value for a temperature of the exhaust gas aftertreatment component (22) is formed as a function of an increase in temperature, which arises as a result of exothermal reactions during the duration of an operating mode (BA2) of the internal combustion engine (10) which is set for the regeneration of said exhaust gas aftertreatment component (22), wherein the expected value is compared with an upper threshold value (T_max) and the control of said internal combustion engine (10) is changed when the threshold value (T_max) is exceeded, such that an expected value formed while taking the changed control into account does not exceed said threshold value (T_max). The method is thereby characterized in that a direction of change of a current temperature of said exhaust gas aftertreatment component (22) is taken into account when forming the expected value.
摘要翻译： 提出了一种用于控制内燃机（10）的方法，该内燃机（10）包括具有临时存储排气成分并可再生的废气后处理部件（22）的排气系统（12），其中温度的期望值 废气后处理部件（22）的形成是随着内燃机（10）的操作模式（BA2）持续期间由于放热反应而引起的温度升高的函数，该内燃机设定为 所述废气后处理部件（22）的再生，其中，当超过所述阈值（T_max）时，所述预期值与上限阈值（T_max）进行比较，并且所述内燃机（10）的控制被改变， 在考虑改变的控制时形成的期望值不超过所述阈值（T_max）。 因此，该方法的特征在于，当形成预期值时，考虑所述废气后处理部件（22）的当前温度的变化方向。
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