Experimental Analysis of Combustion Processes and Emissions in a 2.0L Multi-Cylinder Diesel Engine Featuring a New Generation Piezo-Driven Injector

2009-24-0040

09/13/2009

Event
9th International Conference on Engines and Vehicles
Authors Abstract
Content
In this paper, the potential of new generation piezo-driven indirect acting injectors on high feature diesel engine performance and emissions was assessed by combining experimental tests (carried out at both hydraulic and engine test beds) with the diagnostics of combustion and emissions. This latter was performed by means of a refined multizone combustion diagnostic tool previously developed at Politecnico di Torino. More in detail, a complete hydraulic characterization of the injection system has been carried out and injector performance, in terms of robustness and repeatability of the injection process, has been also evaluated. Injectors were then installed on 4-cylinder 2.0L Diesel engine and tests were performed in seven key-points, which were specifically selected so as to reproduce the engine operations over NEDC in terms of emissions and fuel consumption. For each key-point, different injection-train strategies were tested and the corresponding engine calibrations were optimized by Design of Experiment (DoE) methodology. In-cylinder pressure time-histories measured on the firing engine and injection rates evaluated at hydraulic test rig were then processed by the multizone diagnostic tool so as to obtain Φ-T time-histories of each zone. Finally, the injection strategy showing the best compromise in terms of pollutant emissions, fuel consumption and combustion noise was selected for each key-point and the cause-effect relationships between injection rate and combustion process were analyzed.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-24-0040
Pages
12
Citation
Catania, A., d'Ambrosio, S., Ferrari, A., Finesso, R. et al., "Experimental Analysis of Combustion Processes and Emissions in a 2.0L Multi-Cylinder Diesel Engine Featuring a New Generation Piezo-Driven Injector," SAE Technical Paper 2009-24-0040, 2009, https://doi.org/10.4271/2009-24-0040.
Additional Details
Publisher
Published
Sep 13, 2009
Product Code
2009-24-0040
Content Type
Technical Paper
Language
English