|
| Title |
CHARACTERIZATION OF EMISSIONS FROM AN EARLY MODEL FFV
|
| Accession No |
00622855 |
| Authors |
GABELE, P A; Knapp, K T; SNOW, R F; Siudak, P D; Perry, N K |
Corp. Authors
/ Publisher |
Environmental Protection Agency 
|
| Publication Date |
19910000 |
| Description |
20 p.
|
| Abstract |
An emission study was conducted on a 1987 Ford Crown Victoria flexible-fuel vehicle, an early prototype which had been driven about 25,000 miles. The vehicle was designed to run on either gasoline or blends of gasoline and methanol. Emission rates of regulated (hydrocarbons, carbon monoxide, nitrogen oxides, formaldehyde, and methanol) and nonregulated pollutants (speciated organic materials) were determined for both exhaust and evaporative emissions. Some tests were run using federal test procedures, but additional tests employed different driving schedules (New York City Cycle and Highway Fuel Economy Test) and an ambient temperature of 90 deg F. Both gasoline and a blend containing 85% methanol, 15% gasoline were tested. In the first round of tests, formaldehyde emission rates were somewhat higher than normally observed for similarly aged flexible-fueled vehicles; other emissions were not as elevated. In a second round of tests the catalyst was replaced with a new one, and carbon monoxide and most organic emissions were substantially reduced. In general, hydrocarbon composition of exhaust emissions was significantly affected by cold starts, slightly affected by driving schedule, and unaffected by ambient temperature, test fuel, and catalyst replacement. Hydrocarbon composition of evaporative emissions was only sensitive to the type of evaporative test being performed; diurnal tests typically had larger fractions of lower moleculaar weight paraffins than hot soak tests. |
| TRT Terms |
Air quality management ; Alternate fuels ; Environmental protection ; Evaporative emissions ; Exhaust gases ; Formaldehyde ; Methanol ; Pollutants |
| Other Terms |
Alternative fuels; Emission rates; Evaporative emission control; Exhaust emission; Exhaust emission control |
| Subject Areas |
H17 ENERGY AND ENVIRONMENT; I93 VEHICLE NUISANCE |
| Report Number |
EPA/600/D-91/227 |
| Availability |
National Technical Information Service Order Number: PB91-242933/WTS
|
| Document Source |
National Technical Information Service
|
| TRIS Files |
HRIS |
| Database |
TRIS Online |
|
TRT
