Assessment of Closed-Loop Combustion Control Capability for Biodiesel Blending Detection and Combustion Impact Mitigation for an Euro5 Automotive Diesel Engine

Guido, Chiara and Beatrice, Carlo and Di Iorio, Silvana and Napolitano, Pierpaolo and Di Blasio, Gabriele and Vassallo, Alberto and Ciaravino, Claudio (2011) Assessment of Closed-Loop Combustion Control Capability for Biodiesel Blending Detection and Combustion Impact Mitigation for an Euro5 Automotive Diesel Engine. SAE technical paper series. ISSN 0148-7191

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Abstract

The present paper describes the results of a cooperative research project between GM Powertrain Europe and Istituto Motori - CNR aimed at studying the impact of both fresh and highly oxidized Rapeseed Methyl Ester (RME) at different levels of blending on performance, emissions and fuel consumption of modern automotive diesel engines featuring Closed-Loop Combustion Control (CLCC). In parallel, the capability of this system to detect the level of biodiesel blending through the use of specific detection algorithms was assessed. The tests were performed on the recently released 2.0L Euro5 GM diesel engine for passenger car application equipped with embedded pressure sensors in the glow plugs. Various blends of fresh and aged RME with reference diesel fuel were tested, notably 20% RME by volume (B20), 50% (B50) and pure RME (B100). The tests on the multi-cylinder engine were carried out in a wide range of engine operating points for the complete characterization of the biodiesel performance in the New European Driving Cycle (NEDC). The results highlighted that there is not appreciable difference in terms of performance and emission between fresh and oxidized biodiesel, at all levels of blending. On the other hand, the capability of the CLCC control to detect biodiesel blending with reasonable accuracy and to implement the corrective actions for avoiding emission drift and performance losses was successfully demonstrated.

Item Type:	Article
Subjects:	600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini > 629 Altri rami dell'ingegneria > 629.2 Veicoli terrestri a motore; Cicli > 629.25 Motori (Classificare qui il controllo dell'inquinamento) > 629.2503 Motori a combustione interna
Depositing User:	Rosina Serpe
Date Deposited:	12 Jul 2012 14:45
Last Modified:	15 Feb 2013 08:18
URI:	http://eprints.bice.rm.cnr.it/id/eprint/3786

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