Influences of Butanol Blends on Combustion and Emissions of a Small SI Engine University of Applied Sciences Biel-Bienne

Format:

Conference/Event

Author/Creator:

Czerwinski, Czerwinski, author.

Contributor:

Engelmann, Danilo

Güdel, Martin

Pechout, Martin

Conference Name:

SAE/JSAE Small Engine Technology Conference (2018-11-06 : Dusseldorf, Germany)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

In the general efforts to replace the fossil fuels in transportation by renewable fuels the bioalcohols are an important alternative. The global share of Bioethanol used for transportation is continuously increasing. Butanol, a four-carbon alcohol, is considered in the last years as an interesting alternative fuel, both for Diesel and for Gasoline application. Its advantages for engine operation are: good miscibility with gasoline and diesel fuels, higher calorific value than Ethanol, lower hygroscopicity, lower corrosivity and possibility of replacing aviation fuels.In the present work research with different nButanol portions in gasoline (BuXX)* was performed on the 2-cylinder SI engine with variations of several parameters on engine dynamometer. At different steady state operating points were varied: spark timing (αz), air excess factor (λ) and EGR-rate. Furthermore, the conversion rates and light-off of a 3-way-catalyst were investigated. As research tools the combustion pressure indication and the exhaust gas analysis were used.In the steady state operation, it was found that Bu-blends generally reduce the emissions of CO, HC, NOx in untreated exhaust gas and have a very little influence on catalytic conversion rates of the 3-way-catalyst. At lower engine part load, "Bu" shortens the inflammation lag and reduces the cyclic dispersion of combustion. Nevertheless, this advantage disappears at higher engine loads and with higher "Bu" portions.The present paper shows some examples of the most important results

Notes:

Vendor supplied data

Publisher Number:

2018-32-0058

Access Restriction:

Restricted for use by site license