Quantification of the formaldehyde emissions from different HCCI engines running on a range of fuels

Mikael Lemel*, Anders Hultqvist, Andreas Vressner, Henrik Nordgren, Håkan Persson, Bengt Johansson

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

10 Scopus citations

Abstract

In this paper, the formaldehyde emissions from three different types of homogenous charge compression ignition (HCCI) engines are quantified for a range of fuels by means of Fourier Transform Infra Red (FTIR) spectroscopic analysis. The engines types are differentiated in the way the charge is prepared. The characterized engines are; the conventional port fuel injected one, a type that traps residuals by means of a Negative Valve Overlap (NVO) and finally a Direct Injected (DI) one. Fuels ranging from pure n-heptane to iso-octane via diesel, gasoline, PRF80, methanol and ethanol were characterized. Generally, the amount of formaldehyde found in the exhaust was decreasing with decreasing air/fuel ratio, advanced timing and increasing cycle temperature. It was found that increasing the source of formaldehyde i.e. the ratio of heat released in the cool-flame, brought on higher exhaust contents of formaldehyde. The application of a standard three-way catalyst completely removed formaldehyde from the exhaust stream.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 2005
EventPowertrain and Fluid Systems Conference and Exhibition - San Antonio, TX, United States
Duration: Oct 24 2005Oct 27 2005

Other

OtherPowertrain and Fluid Systems Conference and Exhibition
CountryUnited States
CitySan Antonio, TX
Period10/24/0510/27/05

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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