公开(公告)号：EP2647815A1

公开(公告)日：2013-10-09

申请号：EP12163298.8

申请日：2012-04-05

Applicant: Delphi Technologies Holding S.à.r.l.

Inventor： Schmitt, Julien ,  Michel, Eric

IPC: F02D41/00 ,  F02D41/02 ,  F02D41/18 ,  F02D41/40 ,  F01N3/08

CPC classification number: F02D41/0235 ,  F01N3/0814 ,  F01N3/0885 ,  F01N3/106 ,  F01N3/206 ,  F01N11/00 ,  F01N13/009 ,  F01N2610/00 ,  F01N2900/1404 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/0055 ,  F02D41/025 ,  F02D41/028 ,  F02D41/1446 ,  F02D41/18 ,  F02D41/405 ,  F02D2200/70 ,  F02D2250/18 ,  F02D2250/32 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/42 ,  Y02T10/44 ,  Y02T10/47

Abstract: A process for desulfation of a NOx adsorber in a diesel internal combustion engine exhaust system is disclosed, which comprises: determining an amount of post fuel ( Q 2 ) required to reach a relatively rich target exhaust air fuel ratio (AFR rich ) on the basis of a measured air flow; determining a heating-contributing fuel value ( ηQ 2 ) required to reach or maintain a target desulfation temperature in said NOx adsorber by way of an exothermal reaction; calculating a target air flow (Air tgt ) corresponding to the air flow required for a substantially stoichiometric combustion of a torque-contributing main fuel quantity ( Q 1 ) together with said heating-contributing fuel value ( ηQ 2 ) ; and causing the engine to inject said post fuel amount ( Q 2 ) and said main fuel quantity ( Q 1 ) while controlling the air flow to meet said target air flow ( Air tgt ) .

Abstract translation: 公开了一种用于柴油内燃机排气系统中的NOx吸附器脱硫的方法，其包括：基于a，确定达到相对较浓的目标排气空燃比（AFRrich）所需的后燃料量（Q2） 测量空气流量; 通过放热反应确定在所述NOx吸附器中达到或保持目标脱硫温度所需的加热助燃值（ηQ2） 计算对应于转矩贡献主燃料量（Q1）与所述加热贡献燃料值（ηQ2）的基本化学计量燃烧所需的空气流量的目标空气流量（Airtgt）; 并且在控制空气流量以满足所述目标空气流量（Airtgt）的同时使所述发动机喷射所述后燃料量（Q2）和所述主燃料量（Q1）。

公开(公告)号：EP2594775A1

公开(公告)日：2013-05-22

申请号：EP11189279.0

申请日：2011-11-16

Applicant: Delphi Technologies Holding S.à.r.l.

Inventor： Michel, Eric

IPC: F02M25/07 ,  F02D41/22

CPC classification number: F02D41/0065 ,  F01P2060/10 ,  F02D35/023 ,  F02D35/028 ,  F02D41/345 ,  F02D2041/0067 ,  F02M26/33 ,  F02M26/49

Abstract: A method of assessing the functioning of an EGR cooler of an EGR system in an internal combustion engine, wherein the EGR cooler can be selectively operated in a first and a second operating condition; and wherein the engine comprises at least one cylinder equipped with a pressure sensor. The assessment of the functioning of the EGR cooler is based on the variation of a combustion characteristic value depending on cylinder pressure (CA50), upon switching of the EGR cooler from a first to a second operating condition.

Abstract translation: 一种评估内燃机中的EGR系统的EGR冷却器的功能的方法，其中所述EGR冷却器可以选择性地在第一和第二运行状态下工作; 并且其中所述发动机包括配备有压力传感器的至少一个气缸。 EGR冷却器的功能的评估是基于在将EGR冷却器从第一操作状态切换到第二操作状态时根据气缸压力（CA50）的燃烧特性值的变化。