This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Numerical and Experimental Analysis of Intake Flow Structure and Swirl Optimization Strategies in Four-Valve Off-Highway Diesel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published January 09, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Future emission limits for off-highway application engines need advanced power train solutions to meet stringent emissions legislation, whilst meeting customer requirements and minimizing engineering costs. DI diesel engines with four valves per cylinder are widely used in off- highway applications because of the fundamental advantages of higher volumetric efficiency, lower pumping loss, symmetric fuel spray & distribution in combination with the symmetric air motion which can give nearly optimal mixture formation and combustion process. As a result, the fuel consumption, smoke levels and exhaust emissions can be considerably reduced.
In particular, the four-valve technology, coupled with mechanical low pressure and electronic high pressure fuel delivery systems set different requirements for inlet port performance. In the present paper four valve intake port design strategies are analysed for off highway engine using mechanical fuel injection systems. Different intake port designs are experimentally evaluated on steady state flow test rig using AVL paddle wheel method for swirl and flow coefficient performance. A detail numerical analysis is carried out using AVL FIRE CFD simulation software to study effect of offset fire deck chamfer at cylinder head bottom face on velocity and pressure field which cannot be gained through experimental way. Moreover, the impact of design of directed port on in-cylinder flow field is studied through CFD simulation and the design is optimized to achieve higher swirl targets suitable to requirements of mechanical fuel injection system. Thus, two different approaches are numerically analysed and a promising design concepts are derived to raise the intake port performance for four valve intake port configuration.
CitationS Tikar, S., Malkhede, D., and Marathe, N., "Numerical and Experimental Analysis of Intake Flow Structure and Swirl Optimization Strategies in Four-Valve Off-Highway Diesel Engine," SAE Technical Paper 2019-26-0042, 2019, https://doi.org/10.4271/2019-26-0042.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- CFD Software User Manual (AVL Fire, 2014).
- Gode, R., Goswami, A., Barman, J., and Lakhlani, H., “Impact of Swirl on NOx and Soot Emission by Optimizing Helical Inlet Port of 4 Valve Direct Injection Diesel Engine,” SAE Technical Paper 2015-26-0091, 2015, doi:10.4271/2015-26-0091.
- Andreatta, É.C., Barbieri, F.A.A., Squaiella, L.L.F., and Sassake, R., “Intake Ports Development: Euro IV Diesel Engine Cylinder Head,” SAE Technical Paper 2008-36-0331, 2008, doi:10.4271/2008-36-0331.
- Dembinski, H.W.R. and Ångström, H.-E., “Optical Study of Swirl during Combustion in a CI Engine with Different Injection Pressures and Swirl Ratios Compared with Calculations,” SAE Technical Paper 2012-01-0682, 2012, doi:10.4271/2012-01-0682.
- Tokuda, S., Kubota, M., and Noguchi, Y., “Development of CFD Shape Optimization Technology Using the Adjoint Method and Its Application to Engine Intake Port Design,” SAE Int. J. Engines 6(2):833-842, 2013, doi:10.4271/2013-01-0969.
- Basara, B., Poredos, A., and Gorensek, P., "Scale-Resolving Simulations of the Flow in Intake Port Geometries," SAE Technical Paper 2016-01-0589, 2016, doi:10.4271/2016-01-0589, AVL List GmbH.
- Chan, V.S.S. and Turner, J.T., “Velocity Measurement inside a Motored Internal Combustion Engine Using Three-Component Laser Doppler Anemometry,” Optics & Laser Technology 32:557-566, 2000.
- Jiang, S., Zhu, S., Wen, H., and Huang, S., “Parameter Analysis of Diesel Helical Intake Port Numerical Design,” Energy Procedia 16:558-563, 2012.