| Main Title |
Emissions and fuel economy of a Cadillac prototype with modulated displacement engine / |
| Author |
Barth, Edward Anthony.
|
| CORP Author |
Environmental Protection Agency, Ann Arbor, MI. Test and Evaluation Branch. |
| Publisher |
U.S. Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Test and Evaluation Branch, |
| Year Published |
1980 |
| Report Number |
EPA-AA-TEB-80-14 |
| Stock Number |
PB80-218779 |
| OCLC Number |
744935734 |
| Subjects |
Motor vehicles--Motors--Exhaust gas ;
Fuel Economy
|
| Additional Subjects |
Automobiles ;
Exhaust emissions ;
Fuel consumption ;
Exhaust gases ;
Air pollution ;
Throttling ;
Carburetors ;
Fuel systems ;
Cadillac automobiles ;
Motor vehicles(1979 models)
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ELCD |
EPA AA-TEB-80-14 |
|
NVFEL Library/Ann Arbor, MI |
08/08/2011 |
DISPERSAL |
| NTIS |
PB80-218779 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
13 p. : ill., charts ; 28 cm. |
| Abstract |
The deactivation of one or more engine cylinders is a method that has been proposed as offering potential for vehicle fuel economy improvements. At low power output, the throttle is nearly closed. This introduces a throttling loss, which is the energy that the engine must expend to draw the fuel/air mixture through the carburetor throttle opening. By operating an engine on a reduced number of cylinders and operating these cylinders at higher power levels, the throttling losses are appreciably reduced. The operating cylinders are therefore run at a high brake-mean-effective pressure (BMEP) and therefore potentially more efficiently. A cylinder deactivation system is being considered for use in several 1981 Cadillac models. Other cylinder deactivation systems are currently under development in the United States. Because EPA had not recently tested a cylinder deactivation system designed for current vehicles, EPA contacted the Cadillac Motor Division of GM and requested the loan of a vehicle with a cylinder deactivation system installed. Cadillac made available a system installed in a prototype vehicle. |
| Notes |
"EPA-AA-TEB-80-14." Cover title. "April 1980." |
