公开(公告)号：US20150027106A1

公开(公告)日：2015-01-29

申请号：US14446077

申请日：2014-07-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrea DE FILIPPO ,  David B. Brown ,  Rahul Mital

IPC: F02D41/02 ,  F01N3/22 ,  F01N3/08

CPC classification number: F02D41/0275 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2073 ,  F01N3/208 ,  F01N13/009 ,  F01N2240/20 ,  F01N2560/026 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/0601 ,  F01N2900/1402 ,  F02D41/0055 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1463 ,  F02D41/1465 ,  Y02T10/22 ,  Y02T10/47

Abstract: A method and control apparatus is disclosed for operating an internal combustion engine equipped with an after-treatment system including a catalyst. The control is configured to: perform a DeNOx regeneration event; monitor a parameter (1up) representative of an air-to-fuel ratio upstream of the catalyst and a parameter (1down) representative of an air-to-fuel ratio downstream of the catalyst; and perform a dedicated operating phase of the internal combustion engine to achieve an increase of the NOx emissions, if the value of the parameter (1down) representative of an air-to-fuel ratio downstream of the catalyst is lower than the value of the parameter (1up) representative of an air-to-fuel ratio upstream of the catalyst.

Abstract translation: 公开了一种用于操作配备有包括催化剂的后处理系统的内燃机的方法和控制装置。 控制被配置为：执行DeNOx再生事件; 监测代表催化剂上游的空燃比的参数（1up）和代表催化剂下游空气燃料比的参数（1down）; 并且如果表示催化剂下游的空气燃料比的参数（1down）的值低于参数的值（1down），则执行内燃机的专用操作阶段以实现NOx排放的增加 （1up）代表催化剂上游的空燃比。

公开(公告)号：US20160363069A1

公开(公告)日：2016-12-15

申请号：US15177974

申请日：2016-06-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Giuseppe MAZZARA BOLOGNA ,  Andrea DE FILIPPO

IPC: F02D41/02 ,  F01N3/035 ,  F01N11/00 ,  F01N3/20

CPC classification number: F02D41/029 ,  F01N3/035 ,  F01N3/2066 ,  F01N11/002 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1404 ,  F02D41/1441 ,  F02D41/1446 ,  F02D2041/0265 ,  F02D2200/0812 ,  Y02T10/24 ,  Y02T10/47

Abstract: A method of operating a Selective Catalytic Reduction on Diesel Particulate Filter or SDPF is disclosed. During a SDPF regeneration; temperature values are obtained for the SDPF inlet and SDPF outlet. The temperature values are used to calculate a rate of increase of SDPF outlet temperature and a rate of increase of SDPF inlet temperature. A ratio between the rate of increase of SDPF outlet temperature values and the rate of increase of SDPF inlet temperature values is calculated, and if the ratio is greater than a threshold thereof, the exhaust gas composition is modified in some manner.

Abstract translation: 公开了一种在柴油颗粒过滤器或SDPF上操作选择性催化还原的方法。 在SDPF再生过程中 SDPF入口和SDPF出口获得温度值。 温度值用于计算SDPF出口温度的增加率和SDPF入口温度的增加率。 计算SDPF出口温度值的增加率与SDPF入口温度值的增加率之间的比率，如果该比例大于其阈值，则排气组成以某种方式进行修改。

公开(公告)号：US20160377006A1

公开(公告)日：2016-12-29

申请号：US15189841

申请日：2016-06-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrea DE FILIPPO

IPC: F02D41/00 ,  F01N3/035 ,  F01N3/20

CPC classification number: F02D41/0077 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/2066 ,  F01N9/002 ,  F01N13/009 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/1404 ,  F02D41/0055 ,  F02D41/029 ,  F02D41/1446 ,  F02D2200/101 ,  F02M26/05 ,  F02M26/06 ,  Y02T10/24 ,  Y02T10/47

Abstract: A method is disclosed for operating a low pressure EGR valve in a low pressure EGR route of an internal combustion engine equipped with an aftertreatment system having a urea injector upstream of a Selective Catalytic Reduction on Filter (SCRF). During a regeneration procedure of the SCRF, an enabling condition is monitored for opening the low pressure EGR valve of the low pressure EGR route when enabling condition is satisfied. The enabling condition may be satisfied if a urea injection is not performed.

Abstract translation: 公开了一种在具有在选择性催化还原过滤器（SCRF）上游具有尿素注射器的后处理系统的内燃机的低压EGR路径中操作低压EGR阀的方法。 在SCRF的再生过程中，当满足使能条件时，监视启用条件以打开低压EGR路径的低压EGR阀。 如果不执行尿素喷射，则可以满足启用条件。

公开(公告)号：US20160252028A1

公开(公告)日：2016-09-01

申请号：US15056333

申请日：2016-02-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrea DUTTO ,  Giorgio NATI ,  Andrea DE FILIPPO ,  Cristian TAIBI ,  Adele DE DOMENICO

IPC: F02D41/02 ,  F02D41/14 ,  F02D41/30

CPC classification number: F02D41/025 ,  F01N3/08 ,  F01N9/00 ,  F01N2900/1602 ,  F02D41/0007 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/029 ,  F02D41/14 ,  F02D41/1446 ,  F02D41/3005 ,  F02D41/402 ,  F02D41/405 ,  F02D2041/1409 ,  F02D2041/1422 ,  Y02T10/144 ,  Y02T10/44 ,  Y02T10/47

Abstract: An internal combustion engine includes an aftertreatment device, an injector for injecting fuel into a cylinder and an Electronic Control Unit configured to perform a regeneration process of the aftertreatment device. The regeneration process includes determining a nominal fuel quantity to be injected by an after-injection; monitoring a temperature value of the aftertreatment device; determining a fuel quantity correction value, as a function of a difference between the monitored temperature value and a target temperature value of the aftertreatment device; correcting the nominal fuel quantity value, using the fuel quantity correction value, in order to determine a corrected fuel quantity value; performing a fuel injection cycle including a plurality of after-injections; and injecting the corrected fuel quantity value into the cylinder during one of the after-injections of the cycle.

Abstract translation: 内燃机包括后处理装置，用于将燃料喷射到气缸中的喷射器和被配置为执行后处理装置的再生处理的电子控制单元。 再生过程包括确定通过后喷射注入的标称燃料量; 监测后处理装置的温度值; 确定燃料量校正值，作为所述监测温度值与所述后处理装置的目标温度值之间的差的函数; 使用燃料量校正值来校正标称燃料量值，以便确定校正燃料量值; 执行包括多次后喷射的燃料喷射循环; 以及在所述循环的所述后喷射之一期间将校正后的燃料量值注入所述气缸。