TECHNICAL PAPERS: Internal Combustion Engines

Methods for Specific Emission Evaluation in Spark Ignition Engines Based on Calculation Procedures of Air-Fuel Ratio: Development, Assessment, and Critical Comparison

[+] Author and Article Information
Stefano d’Ambrosio, Ezio Spessa, Alberto Vassallo

Dipartimento di Energetica IC Engines Advanced Laboratory, Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino 10129, Italy

J. Eng. Gas Turbines Power 127(4), 869-882 (Sep 20, 2005) (14 pages) doi:10.1115/1.1852566 History: Received October 24, 2003; Revised June 01, 2004; Online September 20, 2005
Copyright © 2005 by ASME
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Exhaust mass flow rates and variations from ṁexh,UEGO for gasoline and CNG operations
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Estimated λ for gasoline (a) and CNG (b) operations
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Exhaust averaged molecular mass for gasoline (a) and CNG (b) operations
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Comparison among different NOx emission corrections
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Brake specific emissions for gasoline and CNG operations




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