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。