A Study of Gasoline-Ethanol Blends Influence on Performance and Exhaust Emissions from a Light-Duty Gasoline Engine Bosmal Automotive R and D Institute

Format:

Conference/Event

Author/Creator:

Bielaczyc, Bielaczyc, author.

Contributor:

Szczotka, Andrzej

Woodburn, Joseph

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

This paper evaluates the possibility of using bioethanol blends(mixtures of gasoline fuel and ethanol derived from biomass) ofvarying strengths in an unmodified, small-displacement EuropeanEuro 5 light-duty gasoline vehicle. The influence of differentproportions of bioethanol in the fuel blend (E5, E10, E25, E50 andE85) on the emission of gaseous pollutants, such as: carbonmonoxide, hydrocarbons, oxides of nitrogen and carbon dioxide wastested at normal (22°C) and low (-7°C) ambient temperatures for alight-duty vehicle during the NEDC cycle on a chassis dynamometer.Engine performance metrics were also tested. All test results arepresented in comparison to standard European gasoline (E5).Tailpipe emission data presented here suggest that modestimprovements in air quality could result from usage of low-to-midethanol blends in the vehicle tested. In general, blends up to andincluding E50 were relatively unproblematic; emissions of regulatedcompounds and CO₂ were in some cases substantially lower forethanol blends higher than E5 (standard European gasoline). Thisfinding has potentially significant implications for air qualityscenarios regarding potential greater usage of ethanol blends.However, the usage of two ambient temperatures in this studyconfirmed previous findings that such emissions reductions are insome cases strongly temperature dependent, and further testing isrequired in this area. Overall, no single blend emerged as a clearbest or worst performer at either test temperature.Although maximum engine power and torque values for all blendswere very similar, it was observed that for the E5 blend, enginepower and torque were the highest, whereas for the blend E10 theywere the lowest. The maximum power for the blend E10 was some 2%lower (significant at the 95% confidence level) in comparison toresults obtained for the E5 blend.This paper represents a continuation of related researchpreviously described elsewhere

Notes:

Vendor supplied data

Publisher Number:

2012-01-1052

Access Restriction:

Restricted for use by site license