Addition of CNG and Reformer Gas to the Gasoline Fuelled SI-Engine

2004-01-0973

03/08/2004

Event
SAE 2004 World Congress & Exhibition
Authors Abstract
Content
1
Addition of gaseous fuels to the gasoline fuelled SI-engine offers several potentials of improvements, like: cold start without enrichment, lower engine-out emissions, in certain cases better strategy of catalyst heating.
In the present work some results of investigations with addition of compressed natural gas CNG*) and of H2-containing reformer gases are presented. Two engines were fuelled with different compositions of H2-CO-CO2-N2 mixtures as model gases for methanol-, or gasoline- reformed fuels. The investigations were performed at warm, stationary, part load operation.
Due to the presence of hydrogen the reformer gas causes more advantages, than CNG. It lowers the gaseous emission components, shortens the combustion duration, increases the combustion stability and enables much more expanded lean-limits and EGR-limits.
The passive components of the reformer gas (CO2, N2) have similar influence on NOx-reduction as the internal EGR.
Due to a very low stoichiometric air requirement the reformer gas enables a dethrottling of the engine at part load and consequently an improvement of efficiency.
Meta TagsDetails
DOI
https://doi.org/10.4271/2004-01-0973
Pages
12
Citation
Czerwinski, J., and Comte, P., "Addition of CNG and Reformer Gas to the Gasoline Fuelled SI-Engine," SAE Technical Paper 2004-01-0973, 2004, https://doi.org/10.4271/2004-01-0973.
Additional Details
Publisher
Published
Mar 8, 2004
Product Code
2004-01-0973
Content Type
Technical Paper
Language
English