Abstract
Current flexi fuel gasoline and ethanol engines have efficiencies generally lower than dedicated gasoline engines. Considering ethanol has a few advantages with reference to gasoline, namely the higher-octane number and the larger heat of vaporization, the paper explores the potentials of dedicated pure ethanol engines using the most advanced techniques available for gasoline engines, specifically direct injection, turbo charging and variable valve actuation. Computations are performed with state-of-the-art, well validated, engine and vehicle performance simulations packages, generally accepted to produce accurate results targeting major trends in engine developments. the higher compression ratio and the higher boost permitted by ethanol allows larger top brake efficiencies than gasoline, while variable valve actuation produces small penalties in efficiency changing the load. Copyright © 2011 SAE International.
Recommended Citation
A. A. Boretti, "On the Advantages of E100 over Gasoline in Down-sized, Turbo-charged, Direct-injected, Variable Valve Actuated, and Stoichiometric S.I. Engines," SAE Technical Papers, SAE International, Jan 2011.
The definitive version is available at https://doi.org/10.4271/2011-28-0020
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
2688-3627; 0148-7191
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 SAE International, All rights reserved.
Publication Date
01 Jan 2011
