Periodically regenerating diesel particulate filter with hydrogen addition: Towards a fuel reformer – diesel engine aftertreatment system
Periodically regenerating diesel particulate filter with hydrogen addition: Towards a fuel reformer – diesel engine aftertreatment system
复制标题
通过添加氢气定期再生柴油颗粒过滤器：迈向燃料重整器 - 柴油发动机后处理系统
DOI：
10.1533/9780857095060.6.235
复制
发表时间：
2010
期刊：
影响因子：
3.8
通讯作者：
Hua Zhao
中科院分区：
文献类型：
--
作者：
Changho Yang;K. Theinnoi;A. Tsolakis;T. Megaritis;Hua Zhao
各种先进的柴油发动机技术的引入，
提高柴油机的市场份额。然而，控制柴油机颗粒物
(PM)NOx排放仍然是一个重大挑战。事实上，为了满足
未来立法提出更严格的PM和NOx排放限制，更高效，更耐用
并且将需要成本有效的后处理装置。作者正在进行的研究
旨在发展一套柴油机废气减排系统，
在废气辅助柴油燃料重整器中车载产生的氢气。这种类型的
燃料重整过程涉及通过直接加热在船上产生含氢气体，
烃类燃料与发动机废气的催化相互作用。研究的一部分
涉及使用重整物（即含氢气体）来促进烟灰的研究
氧化，从而提高柴油机微粒过滤器（DPF）的效率，
再生过程以及扩大再生温度窗口，
降低废气温度。
本文对柴油机微粒捕集器在不同工况下的再生进行了试验研究
在废气流中加入计量的氢气，
DPF的上游。初步结果表明，加入一定量的氢，
这导致DPF进料气体中的氢气浓度在3- 4%（体积）的范围内。协助
通过提高温度使碳烟与氧气燃烧。气温的上升是
这是由于DPF内的氢反应产生的热量。为了优化
再生过程的车载制氢目标，
实施了向DPF添加氢。这表明氢的边际
所需数量。
The introduction of various advanced diesel engine technologies has resulted in a substantial
increase of the market share of diesel engines. However, control of diesel particulate matter
(PM) and NOx emissions remains a significant challenge. Indeed, in order to meet the
stringent PM and NOx emission limits proposed by future legislation, more efficient, durable
and cost effective aftertreatment devices will be required. Ongoing research by the authors
aims to develop a diesel emissions reduction system with enhanced performance by utilisation
of hydrogen produced on-board in an exhaust gas assisted diesel fuel reformer. This type of
fuel reforming process involves the on-board generation of hydrogen-containing gas by direct
catalytic interaction of hydrocarbon fuels with engine exhaust gases. Part of the research
involves the investigation of using reformate (i.e. hydrogen-containing gas) to promote soot
oxidation and hence improve both the efficiency of the diesel particulate filter (DPF)
regeneration process as well as expanding the regeneration temperature window towards
lower exhaust gas temperatures.
This paper presents the experimental investigation of DPF regeneration at different
temperatures with addition of metered quantities of hydrogen to the exhaust gas flow
upstream of the DPF. Initial results have indicated that the addition of quantities of hydrogen
that result in hydrogen concentrations in the DPF feed gas in the range of 3-4 % (vol.) assist
the soot combustion with oxygen by increasing the temperature. This rise in temperature is a
result of heat generated as a result of hydrogen reactions within the DPF. In order to optimize
on-board hydrogen production targets for the regeneration process, a periodical strategy of
hydrogen addition to the DPF was implemented. This indicated the margin of hydrogen
quantities required.