Optimization of Fuel and Vehicle Parameters

780589

02/01/1978

Event
Passenger Car Meeting & Exposition
Authors Abstract
Content
Octane number requirement mapping of an 8:1 CR Ford 2.3 liter engine was carried out under dynamic conditions at 1″, 3″ and 6″ vacuum accelerations. Equations were developed relating octane number requirements to engine rpm, manifold vacuum, spark advance, air-fuel ratio, and exhaust gas recirculation rate. These equations, together with Ford's extensive emissions and fuel consumption data, were used to determine whether octane number requirements constitute a limiting constraint in the optimization of engine-vehicle systems. In addition, steady-state and dynamic octane number requirements were compared at 9:1 CR. The results indicate that dynamic octane number requirements cannot be predicted from limited steady-state requirements data.
Meta TagsDetails
DOI
https://doi.org/10.4271/780589
Pages
11
Citation
Nesmith, T., Tracy, C., Meguerian, G., Keller, B. et al., "Optimization of Fuel and Vehicle Parameters," SAE Technical Paper 780589, 1978, https://doi.org/10.4271/780589.
Additional Details
Publisher
Published
Feb 1, 1978
Product Code
780589
Content Type
Technical Paper
Language
English