Combined steady state and transient optimization for dynamic smoke reduction on Heavy Duty engine (TIER3 Applications) FIAT POWERTRAIN TECHNOLOGIES S.p.A., Strada delle cascinette 424/34, 10156, Torino, Italia

Format:

Conference/Event

Author/Creator:

Castagna, Edvige, author.

Conference Name:

8th International Conference on Engines for Automobiles (2007-09-16 : Capri (Naples), Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Naples, ITALY Consiglio Nazionale delle Ricerche 2007

Summary:

This paper describes a methodology to investigate the whole set of engine performance requested by off-road vehicles in order to define many sub-ratings with different speed and load ranges:The method has been tested on real case: NEF 6 cylinder Common Rail aftercooled engine with internal EGR and free floating turbocharger where also the intake manifold temperature is a DoE parameter able to simulate different customer cooler solutions.Particular attention has been dedicated to the prediction of fuel consumption as well as NOx, HC and smoke emissions. A "zone" approach (a technique to differentiate most likely steady state regions from transient ones) has been implemented to study in deep detail the emissions control speed ranges vs rated power and peak torque.The Global model was demonstrated to be a powerful tool to define multiple ratings from one DoE plan and to allow subsequent optimisation based on customer engine mission data (datalogged directly from the field) without further testing activity. The correlation to end customer data was remarkably good.The method is currently under further development to take into consideration transient effects for typical off-highway working cycles

Notes:

Vendor supplied data

Publisher Number:

2007-24-0055

Access Restriction:

Restricted for use by site license