Equivalence ratio dependence of reactivity of low and high temperature reactions for ultra-lean gasoline surrogate/air weak flames in micro flow reactor with controlled temperature profile

Philipp Grajetzki, Hisashi Nakamura, Takuya Tezuka, Susumu Hasegawa, Kaoru Maruta

Research output: Contribution to conferencePaperpeer-review

Abstract

A vertical-type micro flow reactor with a controlled temperature profile was used to investigate the effect of the equivalence ratio on low and high temperature reactions of ultra-lean gasoline surrogate/air weak flames. Surrogates of research octane number 90 and 100 were used at equivalence ratios between 0.50 and 1.00. In the experiments, leaner mixtures showed a higher reactivity as indicated by hot flames stabilizing at lower wall temperatures. In 1D steady computations by PREMIX only LLNL mechanism was able to reproduce this trend. This was accounted to difference in the reaction parameters of the chain termination reaction H+O2(+M)=HO2(+M) in the KUCRS mechanisms. Once LLNL's parameters were introduced, results by KUCRS and SIP mechanisms were able to reproduce the experimental results with higher accuracy.

Original languageEnglish
Publication statusPublished - 2017 Jan 1
Event9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 2017 - Okayama, Japan
Duration: 2017 Jul 252017 Jul 28

Other

Other9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 2017
Country/TerritoryJapan
CityOkayama
Period17/7/2517/7/28

Keywords

  • Gasoline surrogates
  • Micro flow reactor
  • Research octane number
  • Ultra-lean combustion
  • Weak flame

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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