Separation and application of multi-stage oxidation field of higher hydro carbon fuels by Flame Chromatography

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289044
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Tohoku University
• Principal Investigator: Maruta Kaoru 東北大学, 流体科学研究所, 教授 (50260451)
• Co-Investigator(Kenkyū-buntansha): 中村 寿 東北大学, 流体科学研究所, 准教授 (40444020)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 着火 / 低温酸化反応 / 冷炎

Outline of Final Research Achievements

It is extensively known that higher hydrocarbon fuels used for automobile and jet engines exhibit cool and hot flames, so-called, multi-stage oxidations. Clarification of multi-stage oxidations are essential for solving knocking and combustion instabilities which limit further improvements of engine efficiencies.
In this study, reaction zone of the low-temperature oxidation was successfully separated from multiple weak flames of n-heptane using an original method, "flame chromatography," i.e., a micro flow reactor with a controlled temperature profile (MFR).
A separated steady cool flame from multiple weak flames of n-heptane was stabilized for the first time and chemical structure of single cool flame in MFR was clarified by species measurements. Essential information on the capabilities of the current reaction kinetics in predicting low-temperature oxidations and issues of their improvements.

Free Research Field

燃焼工学