| Main Title |
Economic Effectiveness of Mandatory Engine Maintenance for Reducing Vehicle Exhaust Emissions. |
| CORP Author |
TRW Systems, Redondo Beach, Calif. |
| Year Published |
1972 |
| Report Number |
CPA-22-69-087; APRAC-CAPE-13-68; 1072; |
| Stock Number |
PB-209 258 |
| Additional Subjects |
( Automobiles ;
Inspection) ;
( Air pollution ;
Exhaust gases) ;
( Automobile engines ;
Exhaust gases) ;
Feasibility studies ;
Maintenance ;
Economic analysis ;
Cost estimates ;
Mathematical models ;
Gas sampling ;
Optimization ;
Carbon monoxide ;
Hydrocarbons ;
Statistical analysis ;
Nitrogen oxides ;
Motor vehicle inspection ;
Automobile exhaust ;
Air pollution abatement
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-209 258 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
93p |
| Abstract |
An investigation was made of the feasibility of controlling exhaust emissions through a program of mandatory vehicle inspection and maintenance. Exhaust emission quantities, i.e., levels and reductions, were estimated based on a constant volume sampling (CVS) procedure. The most cost-effective inspection interval is approximately yearly regardless of the inspection/maintenance procedures applied. Inspection procedures performed in a state lane using the measurement of emission levels under load are generally more cost-effective than those performed in franchised garages using conventional diagnostic instruments, but produce smaller emission reductions. A statistical analysis of the emission reductions for the baseline and test fleets has revealed that the predicted differences in mean emission levels is significant at greater than the 90 percent level of confidence. Emission reductions are most sensitive to the inspection approach used to reject vehicles and to the extent of the imposed maintenance. (Author) |
| Supplementary Notes |
Prepared in cooperation with Scott Research Labs., Inc., San Bernardino, Calif. |
| Highlights Notes |
Presents an economic-effectiveness model for conducting an analysis of automobile exhaust quantities and their control, using a constant volume sampling procedure. Includes studies on inspection frequency, criteria, costs, time, and repair operations. |
| NTIS Title Notes |
Interim rept. |
| PUB Date Free Form |
Jan 72, |
| Category Codes |
13B; 13F; 68A; 85D |
| NTIS Prices |
PC A05/MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
326528477 |
| Origin |
NTIS |
| Type |
CAT |
