Gas and particle emissions from a diesel engine operating in a dual-fuel mode using high water content hydrous ethanol

Jeffrey T. Hwang, William F. Northrop

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Diesel engines running in a dual-fuel fumigation mode using injection of a high volatility fuel into the intake air and direct injection of diesel fuel can reduce NOX and particulate matter emissions. Fuels such as methanol, hydrogen, gasoline, and anhydrous ethanol have been studied as fumigants; however there has been less published regarding the use of high water content hydrous ethanol. Current production of ethanol yields anhydrous (200 proof) ethanol with no water content. The distillation and dehydration processes used to remove excess water from fermented starches during production require large amounts of input energy, reducing the renewability of the resulting fuel. This paper describes an experimental investigation of an aftermarket fumigation system provided by CleanFlex Power Systems, LLC. Experiments to measure gaseous and particulate emissions were conducted using 120 proof hydrous ethanol and nonoxygenated ultra-low sulfur diesel fuel. A John Deere 4045HF475 Tier 2 engine was modified to incorporate the fumigation system in the intake plumbing downstream of the charge-air cooler, just prior to the intake manifold. Data was collected for dual fuel fumigation combustion and compared to diesel only combustion. This study shows that the fumigation system achieved lower levels of NO X and soot proportional to the fumigant energy fraction (FEF), but increased CO and hydrocarbon levels as compared to dieselonly combustion modes. The results suggest that increasing the FEF by using lower water content or better mixing through port-injection may increase the emissions reduction potential of hydrous ethanol fumigation.

Original languageEnglish (US)
Title of host publicationLarge Bore Engines; Fuels; Advanced Combustion; Emissions Control Systems
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791846162
DOIs
StatePublished - 2014
EventASME 2014 Internal Combustion Engine Division Fall Technical Conference, ICEF 2014 - Columbus, United States
Duration: Oct 19 2014Oct 22 2014

Publication series

NameASME 2014 Internal Combustion Engine Division Fall Technical Conference, ICEF 2014
Volume1

Other

OtherASME 2014 Internal Combustion Engine Division Fall Technical Conference, ICEF 2014
Country/TerritoryUnited States
CityColumbus
Period10/19/1410/22/14

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