NDLI: Combustion phasing model for control of a gasoline-ethanol fueled SI engine with variable valve timing

Content Provider	IEEE Xplore Digital Library
Author	Hall, C.M. Shaver, G.M. Chauvin, J. Petit, N.
Copyright Year	2012
Description	Author affiliation: Ray W. Herrick Labs., Purdue Univ., West Lafayette, IN, USA (Hall, C.M.; Shaver, G.M.) \|\| Centre Autom. et Syst., Ecole des Mines de Paris, Paris, France (Petit, N.) \|\| IFP Energies Nouvelles, Rueil-Malmaison, France (Chauvin, J.)
Abstract	Concern over the availability of fossil fuels and energy usage have produced an interest in both alternative fuels and new engine technologies such as variable valve timing to improve engine efficiency. Fuel-flexible engines permit the increased use of ethanol-gasoline blends. Ethanol is a renewable fuel which has the added advantage of improving performance in typically knock-limited operating regions due to the higher octane rating of the fuel. Furthermore, many modern engines are also being equipped with variable valve timing (VVT), a technology which allows increased control of the quantity of burned gas in-cylinder and can increase engine efficiency by reducing the need for throttling. The burned gas fraction as well as the blend ratio of ethanol impact the combustion timing and capturing these effects is essential if the combustion phasing is to be properly controlled. Combustion efficiency is typically tied to an optimal CA50 (crankangle when 50% of fuel is burned) for an engine. This paper proposes a physically-based model which captures combustion phasing and is designed to provide accurate estimates of CA50 for real-time control efforts allowing the CA50 to be adjusted to its optimal value despite changes in fuel and valve overlap. This control-oriented model was extensively validated at over 500 points across the engine operating range for four blends of gasoline and ethanol.
Sponsorship	IEEE Control Syst. Soc.
Starting Page	1271
Ending Page	1277
File Size	341399
Page Count	7
File Format	PDF
ISBN	9781457710957
ISSN	07431619
e-ISBN	9781457710964
e-ISBN	9781467321020
DOI	10.1109/ACC.2012.6314779
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Engines Fuels Mathematical model Valves Ethanol Timing Combustion
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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