Impact of Ethanol Fuels on Regulated Tailpipe Emissions Chrysler Group LLC

Format:

Conference/Event

Author/Creator:

Yassine, Yassine, author.

Contributor:

La Pan, Morgan

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:

Flexible fuel vehicle production has been steadily increasing inthe US over the past fifteen years. Ethanol is considered arenewable fuel additive to gasoline which helps the US efforts inminimizing the dependency on foreign oil. As a result, it isbecoming very hard to find pure gasoline which does not containsome ethanol content at the pump in the US. The fuel currentlyavailable at the pump contains close to 10% ethanol. The fuel andevaporative systems components and materials on newer flexible fuelvehicles are being designed to be tolerant of the 10% ethanolcontent. There is a strong desire from ethanol producers toincrease the ethanol content up to a 20% level. This is still beingdebated by the Environmental Protection Agency and a final decisionhas not been made yet but will be announced by the upcoming Tier 3Notice of Public Rule Making (NPRM) in December of 2011. Earlysigns from EPA are indicating the E15 would be the officialcertification fuel with the upcoming Tier 3 NPRM. The CaliforniaAir Resources Board (CARB) proposed in the LEV III NPRM to use E10as the official fuel for all required certification testing.Many studies are being done investigating the impact of the 20%ethanol fuel blend on the different components in the vehicleespecially on the evaporative systems. This study focuses on theeffect of ethanol content on tailpipe emissions includingcarbonyls. The effect of ethanol addition to gasoline fuels onregulated tailpipe emissions is investigated under differentethanol content and different ambient temperatures. In addition toTHC, CO, NOx, CH₄ and CO₂ tailpipe emissions, theanalysis includes carbonyl measurement with formaldehydes,acetaldehydes, and other 11 carbonyl species. Testing was conductedon a 3.3 L Chrysler Town and Country vehicle at different ambienttemperatures (20°F or -7°C, 50°F or 10°C and 75°F or 24°C) withindolene certification fuels containing 0, 10%, 20% and 85%ethanol. The effect of varying the Reid vapor pressure (RVP) ontailpipe emissions with E85 fuels is also discussed

Notes:

Vendor supplied data

Publisher Number:

2012-01-0872

Access Restriction:

Restricted for use by site license