Record Display for the EPA National Library Catalog


Main Title Study of Stratified Charge for Light Duty Power Plants. Volume 2.
CORP Author Ricardo and Co. Engineers (1927) Ltd., Shoreham-by-Sea (England).;Environmental Protection Agency, Ann Arbor, Mich. Emission Control Technology Div.
Year Published 1975
Report Number DP-20437; EPA-68-03-0375; EPA/460/3-74/011/b;
Stock Number PB-253 767
Additional Subjects Automobiles ; Stratified charge engines ; Air pollution control ; Great Britain ; Exhaust emissions ; Air pollution ; Fuel consumption ; Fuel economics ; Design criteria ; Internal combustion engines ; Light duty vehicles ; Automobile exhaust ; Catalytic reactors(Exhaust systems)
Library Call Number Additional Info Location Last
NTIS  PB-253 767 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 143p
The objectives of this project were to determine the acceptability of various types of stratified charge engines as potential power plants for light duty vehicles and motorcycles in America. The light duty vehicle considered was a 4/5 seat compact sedan with good acceleration capabilities and exhaust emissions below a primary target of 0.41 g/mile HC, 3.4 g/mile CO, 1.5 g/mile NOx. A secondary target of 0.41 g/mile HC, 3.4 g/mile CO and 0.4 g/mile NOx was also considered. A literature survey was undertaken, comparing stratified charge engines with examples of good conventional gasoline and diesel engines. While some stratified charge engines had exhaust emission or fuel economy advantages, there were always sacrifices in other areas. Eleven engines were configured, four of which were specifically directed towards the secondary emission targets. A method of rating the engines was derived, and the design concepts were compared with two gasoline engines by a jury panel. The overall result was that the Ford PROCO and Honda CVCC combustion processes were serious contenders to the gasoline engine at the primary emission target, and that both of these systems, together with the VW combustion process, might be suitable at the secondary targets.