Air-Fuel Ratio Control with Respect to Oxygen Storage Dynamics

被引：0
|
作者：
Tomforde, Michael [1 ]
Drewelow, Wolfgang [1 ]
Schultalbers, Matthias [2 ]
机构：
[1] Univ Rostock, Inst Automat, D-18119 Rostock, Germany
[2] IAV GmbH, Gasoline Engn Syst, D-38518 Gifhorn, Germany
来源：
2011 16TH INTERNATIONAL CONFERENCE ON METHODS AND MODELS IN AUTOMATION AND ROBOTICS | 2011年
关键词：
CATALYST;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Reducing exhaust emissions is one of the biggest challenges facing the automotive engineering community today. In order to comply with future more stringent emission standards, the air-fuel ratio control must be improved. Commonly used control concepts do not account for the oxygen storage ability of the three-way catalyst, even though the storage state mainly influences post-catalyst exhaust emissions. In this paper a new air-fuel ratio control strategy based on the oxygen storage state is presented. Since the oxygen storage state can not be measured directly, a major component of the controller is a newly developed catalyst model that accounts for the spatial distribution of oxygen within the catalyst. The proposed control concept has been successfully tested on a vehicle equipped with a turbocharged, direct injection gasoline engine.
引用
收藏
页码：242 / 247
页数：6
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