| Main Title |
Studies of Emissions from Gasoline-Powered Vehicles Above 6,000-lb. Gross Vehicle Weight. |
| Author |
Tyree, Clifford D. ;
Springer., Karl J. ;
|
| CORP Author |
Southwest Research Inst., San Antonio, Tex.;National Air Pollution Control Administration, Ann Arbor, Mich. Div. of Motor Vehicle Pollution Control. |
| Year Published |
1970 |
| Report Number |
SwRI-AR-752; PH-86-67-72; |
| Stock Number |
PB-267 868 |
| Additional Subjects |
Truck engines ;
Hydrocarbons ;
Carbon monoxide ;
Nitrogen oxygen(NO) ;
Exhaust emissions ;
Continuous sampling ;
Dynamometers ;
Concentration(Composition) ;
Test engines ;
Air pollution ;
Laboratory equipment ;
Numerical analysis ;
Gasoline ;
Air pollution sampling ;
Heavy duty vehicles ;
Procedures
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-267 868 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
95p |
| Abstract |
Continued studies of heavy-duty gasoline-powered vehicle emissions (above 6,000-lb GVW), sponsored by the National Air Pollution Control Administration, Department of Health, Education, and Welfare, are described. Featured in this report are comparisons of road route hydrocarbon, carbon monoxide, and nitric oxide emissions to chassis dynamometer for six trucks of various sizes and makes. Using a constant volume sampler with results expressed in grams per pound of fuel, the current Federal cycle was subjected to a number of modifications to investigate their effect on the road--9 mode cycle relationship. Limited studies with two trucks included comparison of 9-mode cycle results with the engine chassis and stationary operated. Also explored were the potentialities of operating an engine at its peak torque rpm at a variety of power modes. Continued study of alternative dynamometer procedures, sampling, analysis, and methods of expressing gasoline truck emissions is recommended. |
| NTIS Title Notes |
Final rept.. |
| PUB Date Free Form |
Jul 70 |
| Category Codes |
21G; 68A; 81J |
| NTIS Prices |
PC A05/MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323718394 |
| Origin |
NTIS |
| Type |
CAT |
