Virtual Performance and Emissions Mapping for Diesel Engine Design Optimization cmcl innovations

Format:

Conference/Event

Author/Creator:

Smallbone, Smallbone, author.

Contributor:

Bhave, Amit

Hillman, Michael

Mcdavid, Robert

Saville, Allan

Conference Name:

SAE 2013 World Congress & Exhibition (2013-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

This paper builds upon recent publication (SAE Technical Paper2011-01-1388, 2011, doi:10.4271/2011-01-1388) and outlines theon-going development of an advanced simulator for virtual enginemapping and optimization of engine performance, combustion andemissions characteristics.The model is further advanced through development of newsub-models for turbulent mixing, multiple injection events,variable injection pressures, engine breathing and gas exchange, aswell as particulates formation and oxidation. The result is asimulator which offers engine design and performance data typicallyassociated with 1D thermodynamic engine cycle simulations but withthe "physics-based" model robustness usually associatedwith 3D CFD methods. This combination then enables efficientoptimization of engine design with respect to engine performance,combustion characteristics and exhaust gas emissions.As a demonstration, a detailed method to parameterize(calibrate) the advanced PDF-based model is presented followed byapplication to three case studies: 1) a concept study of aheavy-duty diesel engine, examining the impact of increasedinjection pressure and lower compression ratio to meet enginedesign constraints and Stage IV/Tier 4 exhaust gas emission limitsfor both NOx and PM, 2) examining the performance ofboth the proposed model and 3D-CFD to simulate heat release andexhaust gas emissions in a HSDI diesel engine, 3) performance ofthe model over a full load-speed map in terms of combustion andNOx emissions. The results demonstrate the robustness ofthe model compared to experimental observations and equivalentperformance compared to more human resource and CPU cost-intensive3D-CFD simulations

Notes:

Vendor supplied data

Publisher Number:

2013-01-0308

Access Restriction:

Restricted for use by site license