This paper presents experimental data which exemplifies the differences in emission level testing on internal combustion engines when dynamic engine tests are used instead of steady-state engine tests. A comparison of the two test methods is made using hydrocarbon fuels with varying amounts of methanol. Emissions measured include the nitric oxides, unburned hydrocarbons and carbon monoxide. Emission levels and fuel consumption are reported for the various volumetric percentages of methanol in the fuel.

Of special significance are the different trends the emission levels establish when subjected to a dynamic engine test as compared to the results for the steady-state tests. Dynamic tests provide a realistic automobile simulation (accelerations and decelerations) while maintaining the laboratory testing accuracy.

Meeting Name

2nd Annual UMR-MEC Conference on Energy (1975: Oct. 7-9, Rolla, MO)

Document Type

Article - Conference proceedings


Chemical Energy Conversion

Document Version

Final Version

File Type





© 1976 University of Missouri--Rolla, All rights reserved.

Publication Date

09 Oct 1975