Optimization of the transient Diesel engine operation

2009-24-0113

09/13/2009

Event
9th International Conference on Engines and Vehicles
Authors Abstract
Content
Transient emission peaks have become an important fraction of the total emissions during the standardized test cycles for passenger car Diesel engines. This paper is concerned with their reduction, in particular for nitric oxides (NOx) and particulate matter (PM) emissions, by online optimization. It is based on a former work [1] in which alternative target quantities for engine control were proposed, namely in-cylinder oxygen concentrations before (O2,BC) and after combustion (O2,AC). A generic nonlinear optimization is applied to provide a systematic determination for the optimal trajectories of these oxygen target quantities during a transient torque maneuver. The proposed method was implemented on a dynamic engine test bed using a production passenger car Diesel engine for the objective function evaluation. Torque response could be maintained unchanged while NOx as well as PM emission peaks were reduced significantly.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-24-0113
Pages
8
Citation
Alberer, D., and Re, L., "Optimization of the transient Diesel engine operation," SAE Technical Paper 2009-24-0113, 2009, https://doi.org/10.4271/2009-24-0113.
Additional Details
Publisher
Published
Sep 13, 2009
Product Code
2009-24-0113
Content Type
Technical Paper
Language
English