In-cylinder temperature measurements via time-correlated single-photon counting of toluene laser-induced fluorescence through a fiber-based sensor

被引：4

作者：

Friesen, Eugen ^{[1
]}

Gessenhardt, Christopher ^{[1
]}

Kaiser, Sebastian A. ^{[1
]}

Dreier, Thomas ^{[1
]}

Schulz, Christof ^{[1
]}

机构：

[1] Univ Duisburg Essen, Inst Combust & Gasdynam, IVG, D-47057 Duisburg, Germany

来源：

OPTICS LETTERS | 2012年 / 37卷 / 24期

关键词：

ELEVATED-TEMPERATURES; LIFETIME;

D O I：

10.1364/OL.37.005244

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In a near-production internal combustion engine, the effective fluorescence lifetime of toluene was determined by time-correlated single-photon counting with a minimally invasive fiber-optic spark-plug sensor. The lifetime measurement provided continuous crank-angle-resolved measurements of gas temperature. Proof-of-concept experiments in a motored four-cylinder spark-ignition engine were evaluated with a time resolution of 500 mu s, yielding temperature precision of 25 K (standard deviation) at top-dead center. In these experiments, 10% toluene was added to the nonfluorescent base fuel iso-octane. Fluorescence lifetimes were related to temperature via calibration measurements in a high temperature pressure vessel, with the data fitted to a functional dependence derived from a previously published phenomenological model. (C) 2012 Optical Society of America

引用

页码：5244 / 5246

页数：3