||Emissions control technology assessment of heavy duty vehicle engines /
Urban, Charles M. ;
Springer, Karl J. ;
Montalvo., Daniel A.
||Southwest Research Inst., San Antonio, Tex.;Environmental Protection Agency, Ann Arbor, Mich. Emission Control Technology Div.
|| United States Environmental Protection Agency, Office of Air and Waste Management, Office of Mobile Source Air Pollution Control, Emission Control Technology Division,
||EPA-460/3-74-007; PB-236-899; SwRI-AR-933; EPA-68-01-0472
Motor vehicles--Pollution control devices.
Air pollution control equipment ;
Exhaust gases ;
Truck engines ;
Diesel engines ;
Gasoline engines ;
Performance evaluation ;
Experimental design ;
Nitrogen oxides ;
Carbon monoxide ;
Road tests ;
Fuel consumption ;
Diesel exhaust ;
Catalytic reactors(Exhaust systems) ;
Exhaust gas recirculation systems ;
Air fuel ratio ;
Air injection systems
||Research Triangle Park Library/RTP, NC
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||631 pages in various pagings : illustrations
The project investigated the reductions in exhaust emission levels attainable using various control techniques appropriate to gasoline and diesel engines used in vehicles over 14,000-lb GVW. A total of eight gasoline and one diesel engine were evaluated in the laboratory phase of the project. Control equipment included oxidation and reduction catalysts, exhaust gas recirculation and air injection systems, and a deceleration device. Evaluation of the gasoline 'best combination' configuration included: three engine emissions test procedures using an engine dynamometer, a determination of vehicle driveability, and one vehicle emission test procedure using a chassis dynamometer. The driveability evaluations, performed in appropriately sized trucks, included a cold start driveaway, warm driveability and acceleration performance using special procedures for large trucks. Hydrocarbons, carbon monoxide, nitrogen oxides, and aldehydes were monitored.
Includes bibliographical references (pages 214-218). Research performed at Southwest Research Institute under Contract no. 68-01-0472. "EPA-460/3-74-007." PB 236 899. 4to. Distribution made by issuing office. Photocopy.