Exhaust after-treatment systems of gasoline direct injection engines

本文的主要研究课题是在不同的缸内直喷（GDI）发动机策略下，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/富）和燃料（例如汽油、乙醇、丁醇、气体燃料）对污染物排放（数量和特性）以及后处理系统（三元催化剂和/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的角度提出有效的发动机操作策略和后处理设计。约翰逊万丰是排放控制催化剂生产领域的全球领导者，通过各种机制支持这项工作，提供（i）2.4万英镑的现金捐助（ii）催化剂和后处理系统，（iii）催化剂制备和表征的人员时间和设施，以及（iv）技术开发方面的行业技术指导，确保这些技术与汽车行业保持一致。UoB提供了对项目有用的测试设施（发动机、预定催化剂测试设施、排放分析仪）和模拟工具（Ansys、AVL Boost和AVL Cruise），以执行该项目。

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.