Exhaust after-treatment systems of gasoline direct injection engines

本文的主要研究课题是基于不同的汽油直喷发动机策略下的排气后处理系统的有效设计和集成。将评估发动机运行条件(例如贫油/富油)和燃料(例如汽油、乙醇、丁醇、气态燃料)对污染物排放(数量和特性)的影响，从而对后处理系统(三效催化剂和/或汽油颗粒过滤器)的影响。对这些影响的理解将指导从制造和热角度提出有效的发动机运行策略和后处理设计。强生马泰是排放控制催化剂制造的世界领先者，它通过各种机制支持这项工作，提供(I)GB 24K现金贡献(Ii)催化剂和后处理系统，(Iii)催化剂准备和表征的人员时间和设施，以及(Iv)技术开发方面的工业技术指导，以确保这些技术与汽车行业保持良好的一致性。在大华银行提供了对该项目有用的测试设施(发动机、定制催化剂测试设施、排放分析仪)和执行该项目的模拟工具(Ansys、AVL Boost和AVL Cruise)。

The main research topic is based on the effective design and integration of exhaust aftertreatment systems under various gasoline direct injection (GDI) engine strategies. The effects of the engine operating condition (e.g. lean/rich) and fuel (e.g. gasoline, ethanol, butanol, gaseous fuels) on pollutant emissions (quantity and characteristics) and thus, on the aftertreatment system (three way catalysts and/or gasoline particle filters) will be assessed. The understanding of those effects will guide to propose efficient engine operation strategies and aftertreatment designs from the manufacturing and thermal point of view. Johnson Matthey which is the world leader in the manufacture of emissions control catalysts supports this work via a variety of mechanisms providing (i) £24k cash contribution (ii) catalysts and aftertreatment systems, (iii) personnel time and facilities for catalyst preparation and characterisation and (iv) industrial technical guidance in the development of the technologies ensuring those are well aligned with the automobile industry. Test facilities useful for the project (engine, bespoken catalyst testing facilities, emissions analysers) and simulation tools (Ansys, AVL Boost and AVL Cruise) to carry out this project are available at UoB.