Influence of EGR compounds on the oxidation of an HCCI-diesel surrogate

Details Influence of EGR compounds on the oxidation of an HCCI-diesel surrogate Influence of EGR compounds on the oxidation of an HCCI-diesel surrogate

2009-03-22

arxiv.org/abs/0903.3707v1

PROCEEDINGS OF THE COMBUSTION INSTITUTE 32 (2009) 2851-2859

Physics

Chemical Physics

Scientific paper

10.1016/j.proci.2008.06.019

This paper presents an experimental and numerical study of the impact of various additives on the oxidation of a typical automotive surrogate fuel blend, i.e. n-heptane and toluene. It examines the impact of engine re-cycled exhaust has compounds on the control of an Homogeneous Charge Compression-Ignition (HCCI) engine. Series of experiments were performed in a hihly diluted Jet-Stirred Reactor (JDR) at pressures of 1 and 10 atm (1 atm = 101,325 Pa). The chosen thermo-chemical conditions were close to those characteristices of the pre-ignition period in an HCCI engine. The influence of various additives, namely nitric oxide (NO), ethylene (C2H4) and methanol (CH3OH), on the oxidation of a n-heptane/toluene blend was studied over a wide range of temperatures (550-1100 K), including the zone of the Negative Temperature Coefficient (NTC).

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