Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Engine Horsepower Modeling for Diesel Engines.
Author France, Chester J. ;
CORP Author Environmental Protection Agency, Ann Arbor, MI. Standards Development and Support Branch.
Year Published 1976
Report Number EPA-AA-HDV-76-03;
Stock Number PB81-243172
Additional Subjects Trucks ; Buses(Vehicles) ; Diesel engines ; Performance evaluation ; Velocity measurement ; Data acquisition ; Heavy duty vehicles ; Heavy duty engines ; Horsepower
Library Call Number Additional Info Location Last
NTIS  PB81-243172 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 74p
The EPA is conducting a cycle development project for heavy duty engines. Ultimately the project will produce dynamometer cycles. The data being used in the cycle development data analyses are the data collected in the CAPE-21 survey. Forty-four trucks and three buses were surveyed in Los Angeles, and forty-four trucks and four buses were surveyed in New York City. For the trucks surveyed, speed (MPH), engine rpm, road and traffic descriptions, and an engine load parameter (rail pressure for Cummins diesel engines, rack position for Detroit Diesel Allison (DDA) diesel engines, throttle position for caterpillar diesel engines, and manifold vacuum for gasoline engines) were recorded at approximately one second intervals. For cycle development, it is desirable to have the load (power) parameter in terms of % engine HP. The purpose of this report is to summarize the analyses, subsequent results, and conclusions in developing a normalized horsepower model for diesel engines.