Exhaust Gas Emissions of Butanol, Ethanol, and Methanol-Gasoline Blends

[+] Author and Article Information
R. W. Rice, A. K. Sanyal, A. C. Elrod

Clemson University, Clemson, SC 29631

R. M. Bata

West Virginia University, Morgantown, WV 26506

J. Eng. Gas Turbines Power 113(3), 377-381 (Jul 01, 1991) (5 pages) doi:10.1115/1.2906241 History: Received September 01, 1990; Online April 24, 2008


Emissions levels for CO, NOx , and unburned fuel (UBF) from a stationary four-cylinder Chrysler engine were measured under a variety of operating conditions for gasoline and three different 20 vol percent alcohol-gasoline blends. In tests of separate isobutanol, ethanol, and methanol blends, lower CO and NOx emissions were observed for the alcohol blends relative to gasoline, particularly for fuel-rich operation. Generally, on a volume (mole) basis unburned fuel emissions were highest for methanol blends and lowest for gasoline, but on a mass or OMHCE basis only small differences were noted. For a given fuel, the separate effects of engine speed, load, and equivalence ratio were examined.

Copyright © 1991 by The American Society of Mechanical Engineers
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