| Main Title |
Surveillance Study of Smoke from Heavy-Duty Diesel-Powered Vehicles-Southwestern U.S.A. |
| Author |
Storment, John O. ;
Springer., Karl J. ;
|
| CORP Author |
Southwest Research Inst., San Antonio, Tex. Vehicle Emissions Research Lab.;Environmental Protection Agency, Ann Arbor, Mich. Div. of Motor Vehicle Pollution Control. |
| Year Published |
1972 |
| Report Number |
EPA-70-109; SwRI-11-2861; |
| Stock Number |
PB-267 984 |
| Additional Subjects |
Diesel engines ;
Exhaust emissions ;
Smoke ;
Air pollution ;
Sampling ;
Motor vehicles ;
Truck engines ;
Buses(Vehicles) ;
Experimental design ;
Test equipment ;
Statistical analysis ;
Graphic methods ;
Diesel engine exhaust ;
Air pollution sampling ;
Air pollution standards ;
Southwest region(United States) ;
Procedures ;
Heavy duty vehicles
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-267 984 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
129p |
| Abstract |
The primary objective of this study was to determine the effectiveness of the Federal diesel smoke regulations in controlling smoke emissions from a group of heavy-duty engines engaged in routine automotive service. A test fleet consisting of 64 trucks and buses, powered by engines certified to meet 1970 smoke standards, was tested for smoke emission at four-month intervals over a one-year period. Changes in smoke opacity observed during this test period were used to determine, to the extent possible, the effect of time, mileage, type of service on opacity. It was found that, considering the fleet as a whole, smoke opacity tended to increase with time or, equivalently, with mileage. At the baseline test, only one engine had smoke opacity above one of the 1970 standards. After one year of normal operation, 20% of the fleet registered opacity over one of these standards. |
| Supplementary Notes |
See also rept. dated Jan 74, PB-232 682. |
| NTIS Title Notes |
Interim rept. Aug 70-Jun 72. |
| PUB Date Free Form |
Sep 72 |
| Category Codes |
21G; 81J; 68A |
| NTIS Prices |
PC A07/MF A01 |
| Primary Description |
200/05 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323718562 |
| Origin |
NTIS |
| Type |
CAT |
