| Main Title |
Preparation of Truck Version PHS Variable Dilution Sampling System. |
| Author |
Springer, Karl J. ;
Williams., Glenn L. ;
|
| CORP Author |
Southwest Research Inst., San Antonio, Tex.;National Center for Air Pollution Control, Ann Arbor, Mich. Procedures and Emissions Background Development Section. |
| Year Published |
1968 |
| Report Number |
PH-86-67-72; SwRI-11-2056; |
| Stock Number |
PB-267 866 |
| Additional Subjects |
Truck engines ;
Exhaust emissions ;
Gas sampling ;
Numerical analysis ;
Design criteria ;
Calibrating ;
Laboratory equipment ;
Performance evaluation ;
Dilution ;
Concentration(Composition) ;
Air pollution sampling ;
Procedures
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-267 866 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
50p |
| Abstract |
One objective of the work efforts under 'A Study of Truck Emissions Powered by Spark Ignited Engines' was to prepare a truck version of the Public Health Service variable dilution exhaust sampling system. This report covers the preparation of this sampling system as well as some limited results using this method as compared with a proportional sampling system. The major change with the truck version was the capability of handling a threefold increase in exhaust and diluent airflow. In preparing this version, other design features were incorporated to improve and broaden the capability of the system. One major feature was the use of a two-speed motor to drive the system blower, providing twice the air handling capability of the automotive prototype. Control features to maintain stable sampling system operation included a powerstat for control of motor and rotary pump speed and continuous temperature record. |
| NTIS Title Notes |
Special rept.. |
| PUB Date Free Form |
Mar 68 |
| Category Codes |
14B; 68A |
| NTIS Prices |
PC A03/MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323718385 |
| Origin |
NTIS |
| Type |
CAT |
